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Photo of Dennis Lichtenberger(dlichten)

Dennis Lichtenberger

Member of the Graduate Faculty,
Professor, Chemistry and Biochemistry-Sci,

Chemistry & Biochemistry - Sci
dlichten@arizona.edu
520/621-4749
UAVitae logogoogle scholar logoOrcid logo
Grant: $7.4MHiring
Before he was old enough to enter school, Dennis Lichtenberger was curious about looking into nature at a scale smaller than the eye can see. By the time he was eight years old his tools for looking deeper into nature had progressed from a magnifying glass to a microscope to a chemistry bench. His interest in tools for exploring matter at the molecular level led naturally to his later development of photoelectron spectroscopy for probing molecular electronic structure. He obtained his B. S. degree in chemistry in 1969 from Indiana University with an interest in physical and inorganic chemistry and a Ph.D. degree in Physical Chemistry in 1974 from the University of Wisconsin under the guidance of Professor Richard F. Fenske. After a two-year postdoctoral appointment at the University of Illinois with Professor Theodore L. Brown he joined The University of Arizona as an assistant professor. He was drawn to physical inorganic and organometallic chemistry by the multitude of fascinating structures and properties of matter composed of elements throughout the periodic table, with a focus on the electronic structures that determine these properties. His explorations of electronic structure and bonding initially centered on theory and computations and later expanded to experimentally probing electronic structure via photoelectron spectroscopy. In many ways he was in the right place at the right time. First, as a graduate student he shared an office with Michael B. Hall while Hall was in the midst of programming an approximate method for molecular orbital calculations that later came to be known as the Fenske-Hall method (named by Larry Dahl). Second, while he was at Wisconsin the Department obtained one of the first instruments for what was called ESCA at the time (Electron Spectroscopy for Chemical Analysis, now XPS). He developed the instrument for the study of molecules in the gas phase rather than as solids and with UV sources rather than X-ray sources (UPS), and was able to pioneer the acquisition of  detailed quantitative information on the valence electronic structures of organometallic molecules. With photoelectron spectroscopy he showed how to experimentally ‘observe’ the metal d electron configurations, orbital overlap interactions, and electronic symmetry at the metal centers. He obtained energy measures of fundamental electronic bonding and backbonding interactions of metal carbonyls, thiocarbonyls, dinitrogen, ammonia, cyclopentadienyls, and related ligands. The research also emphasized the value of collaborative interactions in projects with Larry Dahl, Tom Whitesides, Bob Angelici, Dieter Sellmann, Steve Nelson, and Chuck Casey, to name a few. Such collaborations have been a continuing characteristic of his career, and have led to many exciting discoveries at the forefronts of chemistry. Postdoctoral Research. Following his Ph.D. research Lichtenberger sought to broaden his experience in other methods and in particular to gain experience in preparing new molecules with properties to advance the understanding of inorganic and organometallic electronic structure and behavior. He was the first to observe by NMR the slowing of the Berry pseudorotation process in five-coordinate d8 metal carbonyl complexes, and showed that steric factors were dominant in determining the rate of fluxionality. In a related study he was able to show that the cis labilization of carbonyl substitution, which was counter to expectations based on electron richness at the metal center, followed from stabilization of the transition states and intermediates by π donor ligands. He also explained the stability of different structures of dicobalt octacarbonyl observed in the IR. Interestingly, these studies of dimetal carbonyl structure, fluxionality, and reaction mechanisms with donor ligands all relate to his recent investigations of the mechanisms of electrocatalytic production of hydrogen with mimics of the active sites of [FeFe]-hydrogenase enzymes. The University of Arizona. Up to this time publications of photoelectron spectra were generally accompanied by electronic structure computations to assign and interpret the ionizations. Lichtenberger felt that for the technique to be truly valuable it needed to provide chemically useful information independent of computations. He took two approaches toward this goal. The first approach was to develop the instrumentation and the photoelectron experiment so that (a) the technique could obtain higher resolution and precision in the measure of the ionization energies, (b) stable photon sources of different energy could be built to take advantage of the variable ionization cross-sections for assigning the ionizations, (c) advanced data analysis procedures could be developed based on the fundamental physics of the photo-ionization process to extract chemical information, and (d) data could be obtained on large and reactive molecules. For many of the systems Lichtenberger has investigated there is no other instrument capable of making the measurements. The second approach to developing photoelectron spectroscopy was to build the relationships of the ionization energies themselves to thermodynamic cycles of bond energies, protonation energies, and other reaction processes and physical properties. In one sense, all chemical behavior may be viewed as the movement of electrons. An obvious example is oxidation and reduction processes, but so too is the selective making and breaking of bonds in catalysis, the transport of electrons in molecular wires, and the interactions of molecules with light. Most recently Lichtenberger has bridged the detailed gas-phase energy measures of photoelectron spectroscopy to the energies in the Marcus theory of electron transfer, to the electronic energies in solid-state assemblies such as light-emitting diodes, and to the redox free energies in solution related to the photoelectrocatalytic production of clean and sustainable solar fuels
Dennis Lichtenberger experts in inorganic chemistry, condensed matter physics, chemistry, electrochemistry, organic chemistry, bioinorganic chemistry, materials science, electrocatalysis, spectroscopy, computational chemistry, organometallic chemistry, catalysis, physical chemistry, heterogeneous catalysis, condensed matter theory, photochemistry, polymer chemistry, bioinformatics, theoretical chemistry, physics, astrophysics, nmr spectroscopy, computational structural biology, molecular dynamics, nmr, astronomy, atomic physics, quantum optics, molecular imaging, philosophy of language, epistemology, organic electronics, organic photovoltaics, biochemistry, enzymology, genomics, biomedical optics, biophotonics
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Courses
Organometallic Compounds 
Computational Chemistry 
Physical Methods in Inorganic Chemistry 
Recent Grants
Logo of DMREF: Computational Chemistry to Accelerate Development of Long Wave Infrared Polymers funding agency
2021 $1.9MActive
DMREF: Computational Chemistry to Accelerate Development of Long Wave Infrared Polymers
Logo of CAS: Enhanced Electrocatalytic Hydrogen Production with Polymer-Supported [2Fe-2S] Clusters funding agency
2020 $520.0KActive
CAS: Enhanced Electrocatalytic Hydrogen Production with Polymer-Supported [2Fe-2S] Clusters
Logo of SusChEM: Electrocatalysis with Butterfly [2Fe-2S] Clusters funding agency
2017 $571.4K
SusChEM: Electrocatalysis with Butterfly [2Fe-2S] Clusters
Logo of SusChEM: Electrocatalysis with Butterfly [2Fe-2S] Clusters funding agency
2017 $20.5K
SusChEM: Electrocatalysis with Butterfly [2Fe-2S] Clusters
Logo of SusChEM: Powerful and Tunable Electron Donors for Reduction Chemistry and Catalysis funding agency
2016 $529.2K
SusChEM: Powerful and Tunable Electron Donors for Reduction Chemistry and Catalysis
Logo of New Catalysts for Electrochemical and Solar H2 Production funding agency
2011 $567.0K
New Catalysts for Electrochemical and Solar H2 Production
Logo of Optimizing the Molecular Structures, Mechanisms, and Energetics of Electron Transfer for Catalytic Production of Solar Fuels funding agency
2011 $400.0K
Optimizing the Molecular Structures, Mechanisms, and Energetics of Electron Transfer for Catalytic Production of Solar Fuels
Logo of Extended Electronic Effects on Ionizations and Electron Transfer funding agency
2008 $384.4K
Extended Electronic Effects on Ionizations and Electron Transfer
Logo of American Chemical Society Editorship - Associate Editor of Organometallics funding agency
2008 $236.9K
American Chemical Society Editorship - Associate Editor of Organometallics
Logo of CRC: Coupling Redox Processes to Drive Chemical Reactivity: New Catalysts for Hydrogen Production funding agency
2005 $2.2M
CRC: Coupling Redox Processes to Drive Chemical Reactivity: New Catalysts for Hydrogen Production
Technologies / Patents
Logo of Compounds Having Low Ionization Energy
2017Compounds Having Low Ionization Energy 
News
2019Using Computational Chemistry to Produce Cheaper Infrared Plastic Lenses 
2015Three UA Faculty Members Named AAAS Fellows 
2003Chemists Discover New Molecules That Excel at Shedding Electrons 
2000Graduate Education Teaching and Mentoring Award 2000: Graduate College honors Bates, Crisp as Teachers and Mentors 
Publications (285)
Recent
2020Mechanistic investigations of [2Fe-2S] clusters for the electrocatalytic production of hydrogen. 
2020FTIR Spectroelectrochemistry of F4TCNQ Reduction Products and Their Protonated Forms 
2020Increasing the rate of the hydrogen evolution reaction in neutral water with protic buffer electrolytes 
2020100th Anniversary of Macromolecular Science Viewpoint: High Refractive Index Polymers from Elemental Sulfur for Infrared Thermal Imaging and Optics 
2020Design principles for fast electron and proton transfer yielding enhanced electrocatalytic production of H2 from pH 7 water. 
2020Synthesis of Metallopolymers via Atom Transfer Radical Polymerization from a [2Fe-2S] Metalloinitiator: Molecular Weight Effects on Electrocatalytic Hydrogen Production 
2019Weak acids with super-electron-donor dimetal complexes: Synergy in bifunctional activity 
2019Water-soluble and air-stable [2Fe-2S]-metallopolymers: A new class of electrocatalysts for H<inf>2</inf> production via water splitting 
2019Super-electron-donor dimetal complexes acting as frustrated Lewis pairs: Electrocatalytic production of hydrogen from weak acids. 
2019Synthetic [2Fe2S] biomimietics in metallopolymers as hydrogen evolution electrocatalysts. 
2019Artificial enzymes via ATRP from [2Fe-2S] metallopolymers for H2 production via water splitting. 
2019Electrochemical and computational investigation of aromatically bridged [2Fe-2S] clusters for electrocatalytic hydrogen production. 
2019Infrared Fingerprint Engineering: A Molecular-Design Approach to Long-Wave Infrared Transparency with Polymeric Materials 
2019Catalytic Metallopolymers from [2Fe-2S] Clusters: Artificial Metalloenzymes for Hydrogen Production 
2019Electrocatalytic hydrogen production via aromatically bridged butterfly [2Fe-2S] clusters. 
2019Macromolecular engineering of electrocatalytic metallopolymers via ATRP: Artificial enzymes for water splitting. 
2018Vibrational Control of Covalency Effects Related to the Active Sites of Molybdenum Enzymes 
2018Tunable dimetal tetraguanidinate paddlewheel complexes with unprecedented electron donor abilities 
2018[FeFe]-Hydrogenase Mimetic Metallopolymers with Enhanced Catalytic Activity for Hydrogen Production in Water 
2018Macromolecular Engineering of the Outer Coordination Sphere of [2Fe-2S] Metallopolymers to Enhance Catalytic Activity for H<inf>2</inf> Production 
2017[Fe-Fe]-hydrogenase mimetic metallopolymers: Water solubility, enhanced rates, and aerobic stability in hydrogen evolution catalysts via polymer support 
2017Synthesis of [FeFe]-hydrogenase mimetic metallopolymers via ATRP for robust and O2 resistant H2-evolution catalysts 
2017Extremely fast electrocatalytic hydrogen production with butterfly [2Fe-2S] clusters inspired by [FeFe]-hydrogenases 
2017Tunable dimetal tetraguanidinate paddlewheel complexes with unprecedented electron donor abilitie 
2017Butterfly [2Fe-2S] cluster-based electrocatalysts with fast rates for hydrogen production. 
2017Fast electrocatalytic production of hydrogen by thiophenedithiolate bridged butterfly [2Fe-2S] clusters. 
2017Understanding the fast rates of open butterfly [2Fe-2S] cluster-based catalysts for the hydrogen-evolving reaction (HER) 
2017Metallodithiolenes revealed as unique chemical chameleons. 
2017[Fe-Fe] hydrogenase mimetic metallopolymers from ATRP with long-lived electrocatalytic activity. 
2017Tunable catalysis with dimetal tetraguanidinate paddlewheel complexes. 
2017[FeFe]-Hydrogenase H-Cluster Mimics with Unique Planar μ-(SCH<inf>2</inf>)<inf>2</inf>ER<inf>2</inf>Linkers (E=Ge and Sn) 
2017Two Conformational Isomers Coxisting in Crystal Lattice of [(µ-SCH3)(µ-SC6H5)Fe2(CO)6] 
2017Electrocatalytic hydrogen production by bridged butterfly [2Fe-2S] catalysts 
2017Synthesis and characterization of thiophene annulated butterfly [2Fe-2S] complexes. 
2017[FeFe]​-​Hydrogenase H-​Cluster Mimics with Unique Planar μ-​(SCH2)​2ER2 Linkers (E = Ge and Sn) 
2016Electrocatalytic hydrogen production with [2Fe2S] clusters yielding high turnover frequencies and numbers. 
2015Through-space interaction mediated by a sulfoxide 
2015Experimental measure of metal-alkynyl electronic structure interactions by photoelectron spectroscopy: (&#951;5-C5H5)Ru(CO)2C&#8801;CMe and [(&#951;5-C5H5)Ru(CO)2]2(&#956;-C&#8801;C). 
2015Experimental measure of metal-alkynyl electronic structure interactions by photoelectron spectroscopy: (η<sup>5</sup>-C<inf>5</inf>H<inf>5</inf>)Ru(CO)<inf>2</inf>CCMe and [(η<sup>5</sup>-C<inf>5</inf>H<inf>5</inf>)Ru(CO)<inf>2</inf>]<inf>2</inf>(μ-CC) 
2015Through space interaction between ferrocenes mediated by a thioether. 
2015From gas-phase ionization energies to solution oxidation potentials: Dimolybdenum tetraformamidinate paddlewheel complexes. 
2014The 2014 organometallics symposium 
2014Intramolecular electron transfer in bipyridinium disulfides 
2014Introduction to the special issue on organometallic electrochemistry 
2014Phosphine-substituted (η<sup>5</sup>-pentadienyl) manganese carbonyl complexes: Geometric structures, electronic structures, and energetic properties of the associative substitution mechanism, including isolation of the slipped η<sup>3</sup>-pentadienyl associative intermediate 
2014New Author Guidelines for 2014: A Format for Computational Structural Data That Can Be Opened with Freely Available Programs such as Mercury . 
2014The 2014 Organometallics Symposium. 
2014Spotlights on Recent JACS Publications 
2014Electrochemical, spectroscopic, and computational study of bis(μ-methylthiolato)diironhexacarbonyl: Homoassociative stabilization of the dianion and a chemically reversible reduction/reoxidation cycle 
2014Effects of alkane linker length and chalcogen character in [FeFe]-hydrogenase inspired compounds 
2014New author guidelines for 2014: A format for computational structural data that can be opened with freely available programs such as "mercury"1 
2014Effects of Alkane Linker Length and Chalcogen Character in [FeFe]-Hydrogenase Inspired Compounds. 
2014Organometallic Electrochemistry 
2013Solubilizing the most easily ionized molecules and generating powerful reducing agents 
2013Synthesis and characterization of [FeFe]-hydrogenase mimics appended with a 2-phenylazopyridine ligand 
2013Redox chemistry of noninnocent quinones annulated to 2Fe2S cores 
2013The electronic states of pyridine-N-oxide studied by VUV photoabsorption and ab initio configuration interaction computations 
2012Comparison of S and Se dichalcogenolato [FeFe]-hydrogenase models with central S and Se atoms in the bridgehead chain 
2012{1,1'-(Dimethylsilylene)bis[methanechalcogenolato]}diiron complexes [2Fe2E(Si)] (E=S, Se, Te)-[FeFe] hydrogenase models 
2012The inaugural 2012 Organometallics symposium 
2012Substituent effects on the electronic characteristics of pentacene derivatives for organic electronic devices: Dioxolane-substituted pentacene derivatives with triisopropylsilylethynyl functional groups 
2012The electronic states of 1,2,4-triazoles: A study of 1H- and 1-methyl-1,2,4-triazole by vacuum ultraviolet photoabsorption and ultraviolet photoelectron spectroscopy and a comparison with ab initio configuration interaction computations 
2011Thermodynamics of the metal-hydrogen bonds in (η sup 5 /sup -C sub 5 /sub H sub 5 /sub )M(CO) sub 2 /sub H (M = Fe, Ru, Os) 
2011Thermodynamics of the metal-hydrogen bonds in (η<sup>5</sup>-C <inf>5</inf>H<inf>5</inf>)M(CO)<inf>2</inf>H (M = Fe, Ru, Os) 
2011Increased stability of (μ-1,3-propanedithiolato)-diironhexacarbonyl anion, and new electrocatalytic pathways for molecular hydrogen production 
2011Catalysis of electrochemical reduction of weak acids to produce H <inf>2</inf>: Role of O-H..S hydrogen bonding 
2011Assessment of the electronic structure of 2,2′-pyridylpyrrolides as ligands 
2011The electronic states of 1,2,3-triazole studied by vacuum ultraviolet photoabsorption and ultraviolet photoelectron spectroscopy, and a comparison with ab initio configuration interaction methods 
2011Electrochemical, structural and computational study of a diiron hydrogenase active site mimic for the catalytic production of hydrogen, [(μ-3,4-thiophenedithiolato)][Fe(CO)<inf>3</inf>]<inf>2</inf> 
2011Metal-sulfur valence orbital interaction energies in metal-dithiolene complexes: Determination of charge and overlap interaction energies by comparison of core and valence ionization energy shifts 
2010Synthesis and characterization of [FeFe]-hydrogenase models with bridging moieties containing (S, Se) and (S, Te) 
2010On the Molecular and Electronic Structures of AsP sub 3 /sub and P sub 4 /sub 
2010Electronic properties of pentacene versus triisopropylsilylethynyl-substituted pentacene: environment-dependent effects of the silyl substituent 
2010Synthesis and characterization of [FeFe]-hydrogenase models with bridging moieties containing (S, Se) and (S, Te) (European Journal of Inorganic Chemistry (2010) 3976-3985)) 
2010Another great day for organometallic chemistry 
2010Synthesis of diiron hydrogenase mimics bearing hydroquinone and related ligands. Electrochemical and computational studies of the mechanism of hydrogen production and the role of O-H⋯S hydrogen bonding 
2010Dedication to the special volume for Dietmar Seyferth 
2010On the Molecular and Electronic Structures of AsP<inf>3</inf> and P <inf>4</inf> 
2010Electronic and geometric effects of phosphatriazaadamantane ligands on the catalytic activity of an [FeFe] hydrogenase inspired complex 
2010Intermolecular effects on the hole states of triisopropylsilylethynyl- substituted oligoacenes 
2010Phosphonothioate hydrolysis through selective P-S bond scission by molybdenum metallocenes 
2009Phosphane- and phosphite-substituted diiron diselenolato complexes as models for [FeFe]-hydrogenases 
2009One- to two-electron reduction of an [FeFe]-hydrogenase active site mimic: The critical role of fluxionality of the [2Fe2S] core 
2009Review of electrochemical studies of complexes containing the Fe<inf>2</inf>S<inf>2</inf> core characteristic of [FeFe]-hydrogenases including catalysis by these complexes of the reduction of acids to form dihydrogen 
2009Synthesis and characterization of diiron diselenolato complexes including Iron Hydrogenase models 
2009New insights into solvolysis and reorganization energy from gas-phase, electrochemical, and theoretical studies of Oxo-Tp Mo sup v /sup molecules 
2009Theoretical and spectroscopic investigations of the bonding and reactivity of (RO) sub 3 /sub M≡N molecules, where M = Cr, Mo, and W 
2009Theoretical and spectroscopic investigations of the bonding and reactivity of (RO)<inf>3</inf>M≡N molecules, where M = Cr, Mo, and W 
2009Preparation and characterization of homologous diiron dithiolato, diselenato, and ditellurato complexes: [FeFe]-hydrogenase models 
2008Metal-sulfur dπ-pπ buffering of the oxidations of metal-thiolate complexes: Photoelectron spectroscopy of (η sup 5 /sup -C sub 5 /sub H sub 5 /sub )Fe(CO) sub 2 /sub SR (SR = SCH sub 3 /sub , S sup t /sup Bu) and (η sup 5 /sup -C sub 5 /sub H sub 5 /sub )Re(NO)(PR sub 3 /sub )SCH sub 3 /sub (PR sub 3 /sub = P sup i /sup Pr sub 3 /sub , PPh sub 3 /sub ) 
2008Valence electronic structure of benzo-2,1,3-chalcogenadiazoles studied by photoelectron spectroscopy and density functional theory 
2008The Electronic Structure and Bonding of the First p-Block Paddlewheel Complex, Bi sub 2 /sub (trifluoroacetate) sub 4 /sub , and Comparison to d-Block Transition Metal Paddlewheel Complexes: A Photoelectron and Density Functional Theory Study 
2008Electronic structure of the d sup 1 /sup bent-metallocene Cp sub 2 /sub VCl sub 2 /sub : A photoelectron and density functional study 
2008Photoelectron spectroscopy of dithiolatodiironhexacarbonyl models for the active site of [Fe-Fe] hydrogenases: Insight into the reorganization energy of the "rotated" structure in the enzyme 
2008Hydrogen generation from weak acids: electrochemical and computational studies in the [(η<sup>5</sup>-C<inf>5</inf>H<inf>5</inf>)Fe(CO) <inf>2</inf>]<inf>2</inf> system 
2008Electron transfer parameters of triisopropylsilylethynyl-substituted oligoacenes 
2008Electronic Structure of the d Bent-metallocene Cp(2)VCl(2): A Photoelectron and Density Functional Study 
2008Electronic structure of the d<sup>1</sup> bent-metallocene Cp<inf>2</inf>VCl<inf>2</inf>: A photoelectron and density functional study 
2008Metal-sulfur dπ-pπ buffering of the oxidations of metal-thiolate complexes: Photoelectron spectroscopy of (η<sup>5</sup>-C<inf>5</inf>H<inf>5</inf>)Fe(CO)<inf>2</inf>SR (SR = SCH<inf>3</inf>, S<sup>t</sup>Bu) and (η<sup>5</sup>-C<inf>5</inf>H<inf>5</inf>)Re(NO)(PR<inf>3</inf>)SCH<inf>3</inf> (PR<inf>3</inf> = P<sup>i</sup>Pr<inf>3</inf>, PPh<inf>3</inf>) 
2007Erratum: Iron-only hydrogenase mimics. Thermodynamic aspects of the use of electrochemistry to evaluate catalytic efficiency for hydrogen generation (Inorganic Chemistry (2005) 44) 
2007Hydrogen generation from weak acids: Electrochemical and computational studies of a diiron hydrogenase mimic 
2007Silyl substitution effects on metal-pentadienyl bonding: Synthesis, structure, photoelectron spectroscopy, and electronic structure of a high-valent half-open zirconocene 
2007Photoelectron spectroscopy and electronic structure calculations of d <sup>1</sup> vanadocene compounds with chelated dithiolate ligands: Implications for pyranopterin Mo/W enzymes 
2007Erratum: Iron-only hydrogenase mimics. Thermodynamic aspects of the use of electrochemistry to evaluate catalytic efficiency for hydrogen generation (Inorganic Chemistry (2006) 45, (5126)) 
2006Competition between metal-amido and metal-imido chemistries in the alkaline earth series: An experimental and theoretical study of BaNH 
2006NMR and EPR studies of chloroiron(iii) tetraphenyl-chlorin and its complexes with imidazoles and pyridines of widely differing basicities 
2006Photoelectron spectroscopy and DFT calculations of easily ionized quadruply bonded Mo<inf>2</inf><sup>4+</sup> compounds and their bicyclic guanidinate precursors 
2006Photoelectron spectroscopy and DFT calculations of easily ionized quadruply bonded Mo sub 2 /sub sup 4+ /sup compounds and their bicyclic guanidinate precursors 
2006Facilitating access to the most easily ionized molecule: An improved synthesis of the key intermediate, W<inf>2</inf>(hpp)<inf>4</inf>Cl<inf>2</inf>, and related compounds 
2006Iron-only hydrogenase mimics. Thermodynamic aspects of the use of electrochemistry to evaluate catalytic efficiency for hydrogen generation 
2006Facilitating access to the most easily ionized molecule: An improved synthesis of the key intermediate, W sub 2 /sub (hpp) sub 4 /sub Cl sub 2 /sub , and related compounds 
2006Heteropentadienyl analogues of half-open ruthenocenes: Metal-ligand interactions and electronic structure perturbations 
2005Expeditious access to the most easily ionized closed-shell molecule, W <inf>2</inf>(hpp)<inf>4</inf> 
2005NMR and EPR studies of the bis(pyridine) and bis(tert-butyl isocyanide) complexes of iron(III) octaethylchlorin 
2005Expeditious access to the most easily ionized closed-shell molecule, W sub 2 /sub (hpp) sub 4 /sub 
2004Photoelectron spectra of potassium salts of hydrotris(pyrazol-1-yl)borates: Electronic structure of the electron withdrawing scorpionates Tp sup (CF3)2 /sup , Tp* sup Cl /sup and comparison to Tp* and Tp 
2004Photoelectron spectra of potassium salts of hydrotris(pyrazol-1-yl)borates: Electronic structure of the electron withdrawing scorpionates Tp <sup>(CF3)2</sup>, Tp*<sup>Cl</sup> and comparison to Tp* and Tp 
2004Pentadienyls vs cyclopentadienyls and reversal of metal-ligand bonding affinity with metal oxidation state: Synthesis, molecular structures, and electronic structures of high-valent zirconium pentadienyl complexes 
2004Inner-sphere electron-transfer reorganization energies of zinc porphyrins 
2003Electron distribution, bonding, and J(Si-H) NMR coupling constant in (η<sup>5</sup>-C<inf>5</inf>H<inf>5</inf>)(CO)<inf>2</inf> MnHSiCl<inf>3</inf>: The molecular orbital view 
2003Ligand-mediated metal-metal interactions and localized versus delocalized mixed-valence cation states of biferrocene and bis(μ-fulvalenediyl)diiron characterized in the gas phase by valence photoelectron spectroscopy 
2003Electron distribution, bonding, and J(Si-H) NMR coupling constant in (η sup 5 /sup -C sub 5 /sub H sub 5 /sub )(CO) sub 2 /sub MnHSiCl sub 3 /sub : The molecular orbital view 
2003Investigation of metal-dithiolate fold angle effects: Implications for molybdenum and tungsten enzymes 
2002Transferability of the valence ionization intensities of chemical functional groups between molecules 
2002How do the electronic structures of low-symmetry metal-hydride and -alkyl complexes compare? Photoelectron spectroscopy and computational studies of (η<sup>5</sup>-C<inf>5</inf>R<inf>5</inf>)Re(NO)(L)R′(L = CO, P(C<inf>6</inf>H<inf>5</inf>)<inf>3</inf>; R, R′ = H, CH<inf>3</inf>) 
2002Vibrational progressions in the valence ionizations of transition metal hydrides: Evaluation of metal-hydride bonding and vibrations in (η sup 5 /sup -C sub 5 /sub R sub 5 /sub )Re(NO)(CO)H [R = H, CH sub 3 /sub ] 
2002Electron-transfer reorganization energies of isolated organic molecules 
2002Vibrational progressions in the valence ionizations of transition metal hydrides: Evaluation of metal-hydride bonding and vibrations in (η<sup>5</sup>-C<inf>5</inf>R<inf>5</inf>)Re(NO)(CO)H [R = H, CH<inf>3</inf>] 
2002Closed-shell molecules that ionize more readily than cesium 
2002How do the electronic structures of low-symmetry metal-hydride and -alkyl complexes compare? Photoelectron spectroscopy and computational studies of (η sup 5 /sup -C sub 5 /sub R sub 5 /sub )Re(NO)(L)R′(L = CO, P(C sub 6 /sub H sub 5 /sub ) sub 3 /sub ; R, R′ = H, CH sub 3 /sub ) 
2000Experimental observation of non-aufbau behavior: Photoelectron spectra of vanadyloctaethylporphyrinate and vanadylphthalocyanine [7] 
2000Electronic structure of early transition-metal carbonyls: Gas-phase photoelectron spectroscopy of (η sup 5 /sup -C sub 5 /sub H sub 5 /sub )M(CO) sub 4 /sub (M = V, Nb, Ta) 
2000Comparison of the Bonding of Benzene and C sub 60 /sub to a Metal Cluster: Ru sub 3 /sub (CO) sub 9 /sub (μ sup 3 /sup -η sup 2 /sup ,η sup 2 /sup ,η sup 2 /sup -C sub 6 /sub H sub 6 /sub ) and Ru sub 3 /sub (CO) sub 9 /sub (μ sup 3 /sup -η sup 2 /sup ,η sup 2 /sup ,η sup 2 /sup -C sub 60 /sub ) 
2000Comparison of the Bonding of Benzene and C<inf>60</inf> to a Metal Cluster: Ru<inf>3</inf>(CO)<inf>9</inf>(μ<sup>3</sup>-η<sup>2</sup>,η <sup>2</sup>,η<sup>2</sup>-C<inf>6</inf>H<inf>6</inf>) and Ru<inf>3</inf>(CO)<inf>9</inf>(μ<sup>3</sup>-η<sup>2</sup>,η <sup>2</sup>,η<sup>2</sup>-C<inf>60</inf>) 
2000A comparative study of the isomers of ReOCl sub 3 /sub (PMe sub 3 /sub ) sub 2 /sub and ReOCl sub 3 /sub (PEt sub 3 /sub ) sub 2 /sub . The isolation and characterization of ReH sub 7 /sub (PR sub 3 /sub ) sub 2 /sub and ReO(OEt)Cl sub 2 /sub (PR sub 3 /sub ) sub 2 /sub (R = Me or Et) and the photoelectron spectrum of ReH sub 7 /sub (PMe sub 3 /sub ) sub 2 /sub 
2000A comparative study of the isomers of ReOCl<inf>3</inf>(PMe<inf>3</inf>)<inf>2</inf> and ReOCl<inf>3</inf>(PEt<inf>3</inf>)<inf>2</inf>. The isolation and characterization of ReH<inf>7</inf>(PR<inf>3</inf>)<inf>2</inf> and ReO(OEt)Cl<inf>2</inf>(PR<inf>3</inf>)<inf>2</inf> (R = Me or Et) and the photoelectron spectrum of ReH<inf>7</inf>(PMe<inf>3</inf>)<inf>2</inf> 
2000Electronic structure of early transition-metal carbonyls: Gas-phase photoelectron spectroscopy of (η<sup>5</sup>-C<inf>5</inf>H<inf>5</inf>)M(CO)<inf>4</inf> (M = V, Nb, Ta) 
2000Metal-metal bonding in Rh sub 2 /sub (O sub 2 /sub CCF sub 3 /sub ) sub 4 /sub : Extensive metal-ligand orbital mixing promoted by filled fluorine orbitals 
2000Metal-metal bonding in Rh<inf>2</inf>(O<inf>2</inf>CCF<inf>3</inf>)<inf>4</inf>: Extensive metal-ligand orbital mixing promoted by filled fluorine orbitals 
2000Gas-phase photoelectron spectroscopic and theoretical studies of 1,2- dichalcogenins: Ionization energies, orbital assignments, and an explanation of their color 
1999Reevaluation of the gas-phase valence photoelectron spectra of octaethylporphyrin and tetraphenylporphyrin 
1999Quadruple metal-metal bonds with strong donor ligands. Ultraviolet photoelectron spectroscopy of M sub 2 /sub (form) sub 4 /sub (M = Cr, Mo, W; form = N,N'- diphenylformamidinate) 
1999Quadruple metal-metal bonds with strong donor ligands. Ultraviolet photoelectron spectroscopy of M<inf>2</inf>(form)<inf>4</inf> (M = Cr, Mo, W; form = N,N'- diphenylformamidinate) 
1998Preparation, characterization and electronic structure of W sub 2 /sub (NMe sub 2 /sub ) sub 2 /sub (OR sub f /sub ) sub 4 /sub , where R sub f /sub = CMe sub 2 /sub CF sub 3 /sub , CMe(CF sub 3 /sub ) sub 2 /sub and C(CF sub 3 /sub ) sub 3 /sub , as deduced by photoelectron spectroscopic studies and the single crystal X-ray structure for Rf = OCMe(CF sub 3 /sub ) sub 2 /sub 
1998Preparation, characterization and electronic structure of W<inf>2</inf>(NMe<inf>2</inf>)<inf>2</inf>(OR<inf>f</inf>)<inf>4</inf>, where R<inf>f</inf> = CMe<inf>2</inf>CF<inf>3</inf>, CMe(CF<inf>3</inf>)<inf>2</inf> and C(CF<inf>3</inf>)<inf>3</inf>, as deduced by photoelectron spectroscopic studies and the single crystal X-ray structure for Rf = OCMe(CF<inf>3</inf>)<inf>2</inf> 
1997Significant intramolecular sulfur-sulfur interactions in cis- and trans-2,3-dimethyl-5,6-dithiabicyclo-[2.1.1]hexane 
1997Relative bonding capabilities of molecules to metals as measured by gas-phase photoelectron spectroscopy 
1997Electronic structure perturbations of substituted ruthenocenes: The first photoelectron spectra of perchloro- and perfluorocyclopentadienyl complexes 
1997Spectroscopic, theoretical, and electrochemical studies of 1,2-dithiins 
1995Ligand-mediated metal-metal interactions in (ν<sup>5</sup>:ν<sup>5</sup>-fulvalene) bis (dicarbonylcobalt) and rhodium complexes 
1995Ligand-mediated metal-metal interactions in (ν sup 5 /sup :ν sup 5 /sup -fulvalene) bis (dicarbonylcobalt) and rhodium complexes 
1994Electronic structure of exohedral interactions between C sub 60 /sub and transition metals 
1994Proton Affinities and Photoelectron Spectra of Phenylalanine and N-Methyl- and N,N-Dimethylphenylalanine. Correlation of Lone Pair Ionization Energies with Proton Affinities and Implications for N-Methylation as a Method to Effect Site Specific Protonation of Peptides 
1994Gas-phase ionization energetics, electron-transfer kinetics, and ion solvation thermochemistry of decamethylmetallocenes, chromocene, and cobaltocene 
1994Electronic structure of exohedral interactions between C<inf>60</inf> and transition metals 
1994Sigma-pi interactions in non-conjugated polyalkynes: A photoelectron spectroscopic study 
1994Steric and electronic balance in metal- phosphine coordination: The phosphine twist 
1993Metal-Acetylide Bonding in (η<sup>5</sup>-C<inf>5</inf>H<inf>5</inf>)Fe(CO)<inf>2</inf>C≡CR Compounds. Measures of Metal-dπ-Acetylide-π Interactions from Photoelectron Spectroscopy 
1993Electron distribution and bonding in η sup 3 /sup -cyclopropenyl-metal complexes 
1993Electronic structure and bonding of C<inf>60</inf> to metals 
1993Metal-acetylide bonding in (η sup 5 /sup -C sub 5 /sub H sub 5 /sub )Fe(CO) sub 2 /sub C≡CR compounds. Measures of metal-dπ-acetylide-π interactions from photoelectron spectroscopy 
1993Electron Distribution and Bonding in η<sup>3</sup>-Cyclopropenyl-Metal Complexes 
1993Investigation of metal-dπ-butadiynyl-π interactions in (η sup 5 /sup -C sub 5 /sub H sub 5 /sub )(CO) sub 2 /sub FeC≡CC≡CH using photoelectron spectroscopy 
1993Investigation of Metal-dπ-Butadiynyl-π Interactions in (η<sup>5</sup>-C<inf>5</inf>H<inf>5</inf>)(CO)<inf>2</inf>FeCCCCH Using Photoelectron Spectroscopy 
1993Electronic structure and bonding of C sub 60 /sub to metals 
1992High resolution images of single C<inf>60</inf> molecules on gold (111) using scanning tunneling microscopy 
1992Electronic structure of monodentate-coordinated diphosphine complexes. Photoelectron spectra of pentacarbonylmethylene bis(dimethyl phosphine)molybdenum and pentacarbonylethylene bis(dimethyl phosphine)molybdenum 
1992The Electronic Nature of the Metal-Metal Quadruple Bond: Variable Photon Energy Photoelectron Spectroscopy of Mo<inf>2</inf>(O<inf>2</inf>CCH<inf>3</inf>)<inf>4</inf> 
1992Electronic structure of monodentate-coordinated diphosphine complexes. Photoelectron spectra of Mo(CO) sub 5 /sub (P(CH sub 3 /sub ) sub 2 /sub CH sub 2 /sub P(CH sub 3 /sub ) sub 2 /sub ) and Mo(CO) sub 5 /sub (P(CH sub 3 /sub ) sub 2 /sub CH sub 2 /sub CH sub 2 /sub P(CH sub 3 /sub ) sub 2 /sub ) 
1992The He I valence photoelectron spectrum ofC sub 70 /sub in the gas phase 
1992High resolution images of single C sub 60 /sub molecules on gold (111) using scanning tunneling microscopy 
1992Correlations of lone pair ionization energies with proton affinities of amino acids and related compounds. Site specificity of protonation 
1992The He I valence photoelectron spectrum ofC<inf>70</inf> in the gas phase 
1992Buckyball-substrate interactions probed by STM and AFM 
1992The electronic nature of the metal-metal quadruple bond: Variable photon energy photoelectron spectroscopy of Mo sub 2 /sub (O sub 2 /sub CCH sub 3 /sub ) sub 4 /sub 
1991Multiple Bonds between Main-Group Elements and Transition Metals. 86.<sup>1</sup> Methyltrioxorhenium(VII) and Trioxo(η<sup>5</sup>-pentamethylcyclopentadienyl)rhenium(VII): Structures, Spectroscopy, and Electrochemistry 
1991Valence and core photoelectron spectroscopy of C<inf>60</inf>, buckminsterfullerene 
1991Photoelectron Spectroscopy and Rates of CO Substitution of (η<sup>5</sup>-C<inf>5</inf>H<inf>4</inf>X)Rh(CO)<inf>2</inf> Compounds. Separation of s and p Ring Substituent Effects 
1991Electronic Structure and Bonding in Four-Coordinate Organometallic Complexes of Aluminum. Valence Photoelectron Spectra of (CH<inf>3</inf>)<inf>3</inf>Al(pyridine) and (CH<inf>3</inf>)<inf>2</inf>(BHT)AI(pyridine) (BHT = 2,6-Di-tert-butyl-4-methylphenoxide) 
1991Delocalized Electronic Interactions in Chiral Cyclopentadienylrhenium Halide Complexes. Valence Photoelectron Spectra of CpRe(NO)(L)× (Cp = η<sup>5</sup>-C<inf>5</inf>H<inf>5</inf>, η<sup>5</sup>-C<inf>5</inf>(CH<inf>3</inf>)<inf>5</inf>; L = CO, P(C<inf>6</inf>H<inf>5</inf>)<inf>3</inf>; × = Cl, Br, I) 
1991Electronic Structure of Transition Metal-Silicon Bonds. Valence Photoelectron Spectra of (ŋ<sup>5</sup>-C<inf>5</inf>H<inf>5</inf>)Fe(CO)<inf>2</inf>L Complexes (L = SiC1<inf>3</inf>, Si(CH<inf>3</inf>)<inf>3</inf>) 
1991Electronic structure and bonding in four-coordinate organometallic complexes of aluminum. Valence photoelectron spectra of (CH sub 3 /sub ) sub 3 /sub Al(pyridine) and (CH sub 3 /sub ) sub 2 /sub (BHT)Al(pyridine) (BHT = 2,6-di-tert-butyl-4-methylphenoxide) 
1991Photoelectron spectroscopy and rates of CO substitution of (η sup 5 /sup -C sub 5 /sub H sub 4 /sub X)Rh(CO) sub 2 /sub compounds. Separation of σ and π Ring substituent effects 
1991Delocalized electronic interactions in chiral cyclopentadienylrhenium halide complexes. Valence photoelectron spectra of CpRe(NO)(L)X (Cp = η sup 5 /sup -C sub 5 /sub H sub 5 /sub , η sup 5 /sup -C sub 5 /sub (CH sub 3 /sub ) sub 5 /sub ; L = CO, P(C sub 6 /sub H sub 5 /sub ) sub 3 /sub ; X = Cl, Br, I) 
1991Electronic structure of transition metal-silicon bonds. Valence photoelectron spectra of (η sup 5 /sup -C sub 5 /sub H sub 5 /sub )Fe(CO) sub 2 /sub L complexes (L = SiCl sub 3 /sub , Si(CH sub 3 /sub ) sub 3 /sub ) 
1991Valence and core photoelectron spectroscopy of C sub 60 /sub , buckminsterfullerene 
1991Multiple bonds between main-group elements and transition metal. 86. sup 1 /sup methyltrioxorhenium(VII) and trioxo(η sup 5 /sup -pentamethylcyclopentadienyl)rhenium(VII): Structures, spectroscopy, and electrochemistry 
1990Ionization band profile analysis in valence photoelectron spectroscopy 
1990Electronic Structure and Bonding in Four-Coordinate Organometallic Complexes of Aluminum. Valence Photoelectron Spectra of BHT-H, Me<inf>3</inf>Al(PMe<inf>3</inf>), and Me<inf>2</inf>(BHT)Al(PMe<inf>3</inf>) 
1990Electronic structure and bonding in four-coordinate organometallic complexes of aluminum. Valence photoelectron spectra of BHT-H, Me sub 3 /sub Al(PMe sub 3 /sub ), and Me sub 2 /sub (BHT)Al(PMe sub 3 /sub ) 
1990Electronic structure control of Si-H bond activation by transition metals.2.Valence photoelectron spectra of (η sup 5 /sup -C sub 5 /sub H sub 4 /sub CH sub 3 /sub )Mn(CO) sub 2 /sub HSiPh sub 3 /sub ,(η sup 5 /sup -C sub 5 /sub H sub 4 /sub CH sub 3 /sub )Mn(CO) sub 2 /sub HSiHPh sub 2 /sub ,and (η sup 5 /sup -C sub 5 /sub H sub 4 /sub CH sub 3 /sub ) 
1990Electronic structure factors of Ge-H bond activation by transition metals. Photoelectron spectra of [mn(η sup 5 /sup -C sub 5 /sub H sub 5 /sub )(CO) sub 2 /sub (HGePh sub 3 /sub )], [mn(η sup 5 /sup -C sub 5 /sub H sub 4 /sub Me)(CO) sub 2 /sub (HGePh sub 3 /sub )], and [mn(η sup 5 /sup -C sub 5 /sub Me sub 5 /sub )(CO) sub 2 /sub (HGePh sub 3 /sub )] 
1990The electronic structure of nitrosyl and carbonyl supported metal-metal interactions. The photoelectron spectra of... 
1990He I valence photoelectron spectra of oxomolybdenum(V) complexes containing diolato or alkoxide ligands 
1990Cyclopentadienyl ring methylation and its effect on Si-H bond activation in (η sup 5 /sup -C sub 5 /sub H sub 5-n /sub (CH sub 3 /sub ) sub n /sub )Mn(CO) sub 2 /sub HSiH(C sub 6 /sub H sub 5 /sub ) sub 2 /sub (n = 0, 1, 5) complexes 
1990Electronic structure factors of Si-H bond activation by transition metals. Valence photoelectron spectra of (η sup 5 /sup -C sub 5 /sub H sub 4 /sub CH sub 3 /sub )Mn(CO)(PMe sub 3 /sub )HSiCl sub 3 /sub and (η sup 5 /sup -C sub 5 /sub H sub 4 /sub CH sub 3 /sub )Mn(CO)(PMe sub 3 /sub )HSiHPh sub 2 /sub (Me = CH sub 3 /sub , Ph = C sub 6 /sub H sub 5 /sub ) 
1990Relative electron donor strengths of tetrathiafulvene derivatives: Effects of chemical substitutions and the molecular environment from a combined photoelectron and electrochemical study 
1990Electronic structure factors of Ge-H bond activation by transition metals. Photoelectron spectra of [mn(η<sup>5</sup>-C<inf>5</inf>H<inf>5</inf>)(CO)<inf>2</inf>(HGePh <inf>3</inf>)], [mn(η<sup>5</sup>-C<inf>5</inf>H<inf>4</inf>Me)(CO)<inf>2</inf>(HGePh <inf>3</inf>)], and [mn(η<sup>5</sup>-C<inf>5</inf>Me<inf>5</inf>)(CO)<inf>2</inf>(HGePh <inf>3</inf>)] 
1990Electronic Structure Factors of Si–H Bond Activation by Transition Metals. Valence Photoelectron Spectra of (η<sup>5</sup>-C<inf>5</inf>H<inf>4</inf>CH<inf>3</inf>)Mn(CO)(PMe<inf>3</inf>)HSiCl<inf>3</inf> and (η<sup>5</sup>-C<inf>5</inf>H<inf>4</inf>CH<inf>3</inf>)]Mn(CO)(PMe<inf>3</inf>)HSiHPh<sup>2</sup> (Me = CH<sup>3</sup>, Ph = C<inf>6</inf>H<inf>5</inf>) 
1990Electronic Structure Control of Si-H Bond Activation by Transition Metals. 2. Valence Photoelectron Spectra of (η<sup>5</sup>-C<inf>5</inf>H<inf>4</inf>CH<inf>3</inf>)Mn(CO)<inf>2</inf>HSiPh<inf>3</inf>, (η<sup>5</sup>-C<inf>5</inf>H<inf>4</inf>CH<inf>3</inf>)Mn(CO)<inf>2</inf>HSiHPh<inf>2</inf>, and (η<sup>5</sup>-C<inf>5</inf>H<inf>4</inf>CH<inf>3</inf>)Mn(CO)<inf>2</inf>HSiFPh<inf>2</inf> (Ph = C<inf>6</inf>H<inf>5</inf>) 
1990Cyclopentadienyl Ring Methylatlon and Its Effect on Si-H Bond Activation in (η<sup>5</sup>-C<inf>5</inf>H<inf>5-n</inf>(CH<inf>3</inf>)n)mn(co)<inf>2</inf>hsih(cehs)<inf>2</inf> (n = 0, 1, 5) complexes 
1989Relative strengths of early transition metal M-H and M-C bonds in substituted niobocenes and tantalocenes. Thermodynamic trends and electronic factors of olefin insertion into a metal-hydride bond 
1989Electronic Structure Factors of Si—H Bond Activation by Transition Metals. The Valence Photoelectron Spectrum of (η<sup>5</sup>-C<inf>5</inf>H<inf>5</inf>)Mn(CO)<inf>2</inf>HSiCl<inf>3</inf> 
1989Experimental measures of the electron distribution and bonding in bis(η<sup>5</sup>-cyclopentadienyl) osmium from He(I) and He(II) valence photoelectron spectroscopy 
1989Electronic structure factors of Si-H bond activation by transition metals. The valence photoelectron spectrum of (n sup 5 /sup -C sub 5 /sub H sub 5 /sub )Mn(CO) sub 2 /sub HSiCl sub 3 /sub 
1988Destabilizing dπ-pπ orbital interactions and the alkylation reactions of iron(II)-thiolate complexes 
1988Valence Electronic Structure of Bis(pyrazolyl)-Bridged Iridium Dicarbonyl Dimers. Electronic Effects of 3,5-Dimethylpyrazolyl Substitution on Metal-Metal Interactions 
1987Intermolecular influences on M-M multiple bonds from thin-film UPS studies of group VI M sub 2 /sub (O sub 2 /sub CCH sub 3 /sub ) sub 4 /sub complexes 
19871,3-Ditungstacyclobutadienes. 2. The synthesis of alkoxide derivatives of W sub 2 /sub (μ-CSiMe sub 3 /sub ) sub 2 /sub (CH sub 2 /sub SiMe sub 3 /sub ) sub 4 /sub and investigations of the electronic structures of the M sub 2 /sub (μ-CSiMe sub 3 /sub ) sub 2 /sub core as a function of d sup n /sup -d sup n /sup interactions (n = 0, M = Ta; n = 1, M = W; n = 2, M = Re) 
19871,3-ditungstacyclobutadienes. 2. the Synthesis of Alkoxide Derivatives of W<inf>2</inf>(μ-csime<inf>3</inf>)<inf>2</inf>(ch<inf>2</inf>sime<inf>3</inf>)<inf>4</inf> and Investigations of the Electronic Structures of the M<inf>2</inf>(μ-csime<inf>3</inf>)<inf>2</inf> core as a Function of D<sup>n</sup>-d<sup>n</sup>interactions (n = 0, M = Ta; N = 1, M = W; N = 2, M = Re) 
1987The tungsten-tungsten triple bond. 13. Bisalkyl tetracarboxylates of dimolybdenum and ditungsten. Triple bonds between metal atoms with the valence molecular orbital description π sup 4 /sup δ sup 2 /sup 
1987The Tungsten-Tungsten Triple Bond. 13. Bisalkyl Tetracarboxylates of Dimolybdenum and Ditungsten. Triple Bonds between Metal Atoms with the Valence Molecular Orbital Description π<sup>4</sup>ẟ<sup>2</sup> 
1987Experimental quantum chemistry: Photoelectron spectroscopy of organotransition-metal complexes 
1987Localization effects in the Auger spectra of ring nitrogen systems: Pyridine, poly(2-vinyl)pyridine, borazine, and boron nitride 
1987Intermolecular Influences on M-M Multiple Bonds from Thin-Film UPS Studies of Group VI M<inf>2</inf>(0<inf>2</inf>CCH<inf>3</inf>)<inf>4</inf>Complexes 
1986Additions and Corrections: Electronic Structure Factors of Carbon-Hydrogen Bond Activation. The Photoelectron Spectroscopy of (Cyclohexenyl)manganese TricarbonylJournal of the American Chemical Society (1986) 108(10) (2560f–2567) (10.1021/ja00270a012)) 
1986Acyclic polythioether complexes: Preparation and crystal structure of tricarbonyl(2,5,8-trithianonane)molybdenum(0) 
1986Erratum: Electronic structure factors of carbon-hydrogen bond activation. The photoelectron spectroscopy of (cyclohexenyl)manganese tricarbonyl (Journal of the American Chemical Society (1986) 108 (2560-2567)) 
1986Electronic structure factors of carbon-hydrogen bond activation. The photoelectron spectroscopy of (cyclohexenyl)manganese tricarbonyl 
1986Experimental Characterization of an Electron-Rich (σ<sup>2</sup>π<sup>4</sup>δ<sup>2</sup>δ<sup>*2</sup>) Metal-Metal Triple Bond. Synthesis, Reactivity, and Photoelectron Spectral Studies of Trimethylphosphine Complexes of Dirhenium(II) 
1986Inexpensive and high-precision digital power supply and counting interface for UPS, XPS, and Auger spectrometers 
1986Experimental characterization of an electron-rich (σ sup 2 /sup π sup 4 /sup δ sup 2 /sup δ* sup 2 /sup ) metal-metal triple bond. Synthesis, reactivity, and photoelectron spectral studies of trimethylphosphine complexes of dirhenium(II) 
1985Principles of electronic structure in transition metal complexes. Additive ligand electronic effects and core-valence ionization correlations for Mo(CO) sub 6-n /sub (PMe sub 3 /sub ) sub n /sub where n=0, 1, 2, 3 
1985Principles of electronic structure in transition metal complexes. Additive ligand electronic effects and core-valence ionization correlations for Mo(CO)<inf>6-n</inf>(PMe<inf>3</inf>)<inf>n</inf> where n=0, 1, 2, 3 
1985The valence σ ionization in systems with multiple metal-metal bonds 
1985Comparison of thionitrosyl and nitrosyl bonding in dicarbonyl(η sup 5 /sup -cyclopentadienyl)chromium complexes by gas-phase ultraviolet and x-ray photoelectron spectroscopy 
1985Cyclic polythioether complexes: Preparation and crystal structure of tricarbonyl(1,4,7-trithiacyclononane)molybdenum(0) 
1985Cyclic Polythioether Complexes: Preparation and Crystal Structure of Tricarbonyl (1, 4, 7-trithiacyclononane) molybdenum (0)<sup>1</sup> 
1985Comparison of Thionitrosyl and Nitrosyl Bonding in Dicarbonyl(η5-cyclopentadienyl)chromium Complexes by Gas-Phase Ultraviolet and X-ray Photoelectron Spectroscopy 
1984Distortions in coordinated cyclopentadienyl rings: Crystal, molecular, and electronic structural analysis of (ƞ<sup>5</sup>-Pentamethylcyclopentadienyl)dlcarbonylrhodlum<sup>1</sup> 
1984Distortions in coordinated cyclopentadienyl rings: Crystal, molecular, and electronic structural analysis of (η sup 5 /sup -pentamethylcyclopentadienyl)dicarbonylrhodium 
1984Electronic structure and bonding characteristics of cyclopentadienyl d<sup>8</sup> metal-ligand complexes. core and valence ionization study of CpM(CO)<inf>2</inf> where M = Co and Rh and Cp = ƞ<sup>5</sup>-C<inf>5</inf>H<inf>5</inf> and ƞ<sup>5</sup>-C<inf>5</inf>(CH<inf>3</inf>)<inf>5</inf><sup>1</sup> 
1984Electronic structure and bonding characteristics of cyclopentadienyl d sup 8 /sup metal-ligand complexes. Core and valence ionization study of CpM(CO) sub 2 /sub where M = Co and Rh and Cp = η sup 5 /sup -C sub 5 /sub H sub 5 /sub and η sup 5 /sup -C sub 5 /sub (CH sub 3 /sub ) sub 5 /sub 
1984Trend of shape resonance-induced features in the angular distribution parameter as a function of photon energy for carbon, silicon and germanium tetrac 
1984Ligand additivity in the valence photoelectron spectroscopy of phosphine-substituted molybdenum carbonyls 
1984Contribution of a δ-Orbital Electron to a Quadruple Metal-Metal Bond. A Direct Experimental Measure from Vibrational Fine Structure in the δ Ionization of MO<inf>2</inf>(O<inf>2</inf>CCH<inf>3</inf>)<inf>4</inf> 
1984Thionitrosyl and bridging sulfide complexes of dicarbonyl[hydridotris(3,5-dimethylpyrazolyl)borato]metal (metal = molybdenum and tungsten) 
1984Contribution of a δ-orbital electron to a quadruple metal-metal bond. A direct experimental measure from vibrational fine structure in the δ ionization of Mo sub 2 /sub (O sub 2 /sub CCH sub 3 /sub ) sub 4 /sub 
1984Multinuclear NMR studies of electron distributions: sup 14 /sup N, sup 13 /sup C, and sup 95 /sup Mo spectra of nitrosyl and thionitrosyl complexes of chromium, molybdenum, and tungsten 
1984Thionitrosyl Bridging Sulfide Complexes of Dicarbonyl[Hydridotris(3,5-Dimethylpyrazolyl)Borato]metal (Metal = Molybdenum and Tungsten) 
1984Multinuclear NMR Studies of Electron Distributions: <sup>14</sup>N, <sup>13</sup>C, and <sup>95</sup>Mo Spectra of and Thionitrosyl Complexes of Chromium, Molybdenum, and Tungsten 
1982Sunlight Photochemistry: The preparation of dicarbonyl(η<sup>5</sup>-methylcyclopentadienyl) triphenylphosphinemanganese 
1982Vibrational Fine Structure in the Valence Ionizations of Transition-Metal Hexacarbonyls: New Experimental Indication of Metal-to-Carbonyl π Bonding 
1982Comparative studies of Mo-Mo and W-W quadruple bonds by SCF-Xα-SW calculations and photoelectron spectroscopy 
1981Valence Ionizations of Olefins Coordinated to Metals. Olefin Dicarbonyl(η<sup>5</sup>-(methyl and pentamethyl)cyclopentadienyl)manganese Complexes 
1981The Jahn-Teller effect in the photoelectron spectrum of iron pentacarbonyl 
1981Bonding in the Syn and Anti Isomers of Di-µ-sulfido-bis(sulfido(l,2-diinercaptoethanato)molybdate(V)) Anions 
1981The valence electronic structure of bridging methylenes: UV photoelectron spectroscopy of μ-methylene-bis(dicarbonyl(η sup 5 /sup -cyclopentadienyl)manganese) 
1981Bonding in the syn and anti isomers of di-μ-sulfido-bis(sulfido(1,2-dimercaptoethanato)molybdate(V)) anions 
1981The Effects of Methyl Group Substitution on Metal-Coordinated Cyclopentadienyl Rings. The Core and Valence Ionizations of Methylated Tricarbonyl(η<sup>5</sup>-cyclopentadienyl)metal Complexes 
1981The effects of methyl group substitution on metal-coordinated cyclopentadienyl rings. The core and valence ionizations of methylated tricarbonyl(η sup 5 /sup -cyclopentadienyl)metal complexes 
1981Valence ionizations of olefins coordinated to metals. Olefin dicarbonyl(η sup 5 /sup -(methyl and pentamethyl)cyclopentadienyl)manganese complexes 
1981The Valence Electronic Structure of Bridging Methylenes: UV Photoelectron Spectroscopy of ε-Methylenebis(dicarbonyl(η<sup>5</sup>-cyclopentadienyl)manganese) 
1980Counterintuitive consequences of filled ligand π interactions with metal d orbitals [1] 
1980Erratum: Comments on Koopmans' theorem and electron relaxation with valence ionisation (Inorganic Chemistry (1980) 19, (1732-1733)) 
1980Comments on Koopmans' Theorem and Electron Relaxation with Valence Ionization 
1980Photoelectron spectra of nitrosyldicarbonyl(η<sup>5</sup>-cyclopentadienyl)chromium and thionitrosyldicarbonyl(η<sup>5</sup>-cyclopentadienyl)chromium. Comparison of the electronic structures of metal-nitrosyl and metal-thionitrosyl complexes 
1980Additions and corrections: Comments on Koopmans' Theorem and electron relaxation with valence ionization 
1980Photoelectron spectra of nitrosyldicarbonyl(η sup 5 /sup -cyclopentadienyl)chromium and thionitrosyldicarbonyl(η sup 5 /sup -cyclopentadienyl)chromium. Comparison of the electronic structures of metal-NO and metal-NS complexes 
1980Counterintuitive Consequences of Filled Ligand. Pi. Interactions with Metal D Orbitals 
1979CpM(CO)<inf>2</inf>(ligand) Complexes 
1979Electronic Properties of Bis(η<sup>5</sup>-cyclopentadienyl)titanium 2,2'-Bipyridyl. A Singlet Molecule with a Low-Lying Triplet Excited State<sup>1</sup> 
1979CpM(CO) sub 2 /sub (ligand) complexes 
1979Are ionization energies right-handed or left-handed? 
1979Electronic properties of bis(η sup 5 /sup -cyclopentadienyl)titanium 2,2′-bipyridyl. A singlet molecule with a low-lying triplet excited state 
1978Nonbridged structures of dicobalt octacarbonyl [2] 
1978Cis labilization of ligand dissociation. 5. A molecular orbital investigation 
1978Nonbridged Structures of Dicobalt Octacarbonyl 
1977A variable temperature carbon-13 nuclear magnetic resonance investigation of intramolecular rearrangement in (CO) sub 4 /sub CoEX sub 3 /sub complexes 
1977A Variable Temperature Carbon-13 Nuclear Magnetic Resonance Investigation of Intramolecular Rearrangement in (CO)<inf>4</inf>CoEX<inf>3</inf>Complexes<sup>1</sup> 
1976The He(I) photoelectron spectra and valence electronic structures of η<sup>5</sup>-C<inf>5</inf>H<inf>5</inf>Mn(CO)<inf>2</inf>N<inf>2</inf> and η<sup>5</sup>-C<inf>5</inf>H<inf>5</inf>Mn(CO)<inf>2</inf>NH<inf>3</inf> 
1976The He(I) photoelectron spectra and valence electronic structures of η sup 5 /sup -C sub 5 /sub H sub 5 /sub Mn(CO) sub 2 /sub N sub 2 /sub and η sup 5 /sup -C sub 5 /sub H sub 5 /sub Mn(CO) sub 2 /sub NH sub 3 /sub 
1976sup 59 /sup Co nuclear quadrupole resonance spectra and low temperature sup 13 /sup C magnetic resonance spectra of X sub 3 /sub SnCo(CO) sub 4 /sub compounds [16] 
1976The helium(I) photoelectron spectra and electronic structure of (η sup 5 /sup -cyclopentadienyl) d sup 6 /sup metal carbonyls 
1976The transferability of molecular fragment canonical orbitals 
1976The Helium(I) Photoelectron Spectra and Electronic Structure of (η<sup>5</sup>-Cyclopentadienyl) d<sup>6</sup> Metal Carbonyls 
1976<sup>59</sup>Co Nuclear Quadrupole Resonance Spectra and Low Temperature <sup>13</sup>C Magnetic Resonance Spectra of X<inf>3</inf>SnCo(CO)<inf>4</inf> Compounds 
1976Electronic structure of transition metal thiocarbonyl complexes 
1975Nonparameterized Molecular Orbital Calculations and Photoelectron Spectroscopy of Open- and Closed-Shell M(IV) M(η<sup>5</sup>-C<inf>5</inf>H<inf>5</inf>)<inf>2</inf>L<inf>2</inf> Complexes 
1975Nonparameterized molecular orbital calculations and photoelectron spectroscopy of open- and closed-shell M(IV) M(η sup 5 /sup -C sub 5 /sub H sub 5 /sub ) sub 2 /sub L sub 2 /sub complexes 
1975Bonding in ring whizzers. I. Photoelectron spectra and molecular orbital calculations for (η sup 5 /sup -C sub 6 /sub H sub 7 /sub )Mn(CO) sub 3 /sub , (η sup 5 /sup -C sub 7 /sub H sub 9 /sub )Mn(CO) sub 3 /sub , and (η sup 5 /sup -C sub 7 /sub H sub 7 /sub )Mn(CO)3 
1975Bonding In Ring Whizzers. I. Photoeiectrom Spectra and Molecular Orbital Calculations for (η<sup>5</sup>-C<inf>6</inf>H<inf>7</inf>)Mn(CO)<inf>3</inf>, (η<sup>5</sup>-C<inf>7</inf>H<inf>9</inf>)Mn(CO)<inf>3</inf>, and (η<sup>5</sup>.C<inf>7</inf>H<inf>7</inf>)Mn(CO)<inf>3</inf> 
1974Assignment of the Photoelectron Spectra of Mn(CO)<inf>5</inf>CH<inf>3</inf> and Mn(CO)<inf>5</inf>CF<inf>3</inf> 
1974Assignment of the photoelectron spectra of Mn(CO) sub 5 /sub CH sub 3 /sub and Mn(CO) sub 5 /sub CF sub 3 /sub 
1973Photoelectron Spectra and Electronic Structure of Pentacarbonylmanganese Halides 
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