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Synthesis, characterization, and crystal structures of molybdenum complexes of unsymmetrical electron-poor dithiolene ligands. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.04.025] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Matsumoto T, Yano H, Wakizaka M, Kobayashi A, Kato M, Chang HC. Syntheses and Structures of Molybdenum-Oxo Complexes Prepared by the Reactions of [MoII2(OAc)4] with tert-Butyl- or Bromo-Substituted Catechols. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2015. [DOI: 10.1246/bcsj.20140208] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Takeshi Matsumoto
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University
| | - Hirokazu Yano
- Department of Chemistry, Faculty of Science, Hokkaido University
| | | | | | - Masako Kato
- Department of Chemistry, Faculty of Science, Hokkaido University
| | - Ho-Chol Chang
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University
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Jayarathne U, Chandrasekaran P, Greene A, Mague JT, DeBeer S, Lancaster KM, Sproules S, Donahue JP. X-ray absorption spectroscopy systematics at the tungsten L-edge. Inorg Chem 2014; 53:8230-41. [PMID: 25068843 PMCID: PMC4139175 DOI: 10.1021/ic500256a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Indexed: 01/08/2023]
Abstract
A series of mononuclear six-coordinate tungsten compounds spanning formal oxidation states from 0 to +VI, largely in a ligand environment of inert chloride and/or phosphine, was interrogated by tungsten L-edge X-ray absorption spectroscopy. The L-edge spectra of this compound set, comprised of [W(0)(PMe3)6], [W(II)Cl2(PMePh2)4], [W(III)Cl2(dppe)2][PF6] (dppe = 1,2-bis(diphenylphosphino)ethane), [W(IV)Cl4(PMePh2)2], [W(V)(NPh)Cl3(PMe3)2], and [W(VI)Cl6], correlate with formal oxidation state and have usefulness as references for the interpretation of the L-edge spectra of tungsten compounds with redox-active ligands and ambiguous electronic structure descriptions. The utility of these spectra arises from the combined correlation of the estimated branching ratio of the L3,2-edges and the L1 rising-edge energy with metal Zeff, thereby permitting an assessment of effective metal oxidation state. An application of these reference spectra is illustrated by their use as backdrop for the L-edge X-ray absorption spectra of [W(IV)(mdt)2(CO)2] and [W(IV)(mdt)2(CN)2](2-) (mdt(2-) = 1,2-dimethylethene-1,2-dithiolate), which shows that both compounds are effectively W(IV) species even though the mdt ligands exist at different redox levels in the two compounds. Use of metal L-edge XAS to assess a compound of uncertain formulation requires: (1) Placement of that data within the context of spectra offered by unambiguous calibrant compounds, preferably with the same coordination number and similar metal ligand distances. Such spectra assist in defining upper and/or lower limits for metal Zeff in the species of interest. (2) Evaluation of that data in conjunction with information from other physical methods, especially ligand K-edge XAS. (3) Increased care in interpretation if strong π-acceptor ligands, particularly CO, or π-donor ligands are present. The electron-withdrawing/donating nature of these ligand types, combined with relatively short metal-ligand distances, exaggerate the difference between formal oxidation state and metal Zeff or, as in the case of [W(IV)(mdt)2(CO)2], exert the subtle effect of modulating the redox level of other ligands in the coordination sphere.
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Affiliation(s)
- Upul Jayarathne
- Department
of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
| | - Perumalreddy Chandrasekaran
- Department
of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
- Department
of Chemistry and Biochemistry, Lamar University, Beaumont, Texas 77710, United States
| | - Angelique
F. Greene
- Department
of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
| | - Joel T. Mague
- Department
of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
| | - Serena DeBeer
- Department
of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
- Max-Planck-Institut
für Chemische Energiekonversion, Stiftstrasse 34-36, D-45470, Mülheim an der Ruhr, Germany
| | - Kyle M. Lancaster
- Department
of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853, United States
| | - Stephen Sproules
- WestCHEM,
School of Chemistry, University of Glasgow, Glasgow G12 8QQ, United Kingdom
| | - James P. Donahue
- Department
of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118, United States
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Colorado-Peralta R, Sanchez-Vazquez M, Hernández-Ahuactzi IF, Sánchez-Ruiz SA, Contreras R, Flores-Parra A, Castillo-Blum SE. Structural study of molybdenum(VI) complexes containing bidentate ligands: Synthesis, characterization and DFT calculations. Polyhedron 2012. [DOI: 10.1016/j.poly.2012.09.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Sproules S, Banerjee P, Weyhermüller T, Yan Y, Donahue JP, Wieghardt K. Monoanionic Molybdenum and Tungsten Tris(dithiolene) Complexes: A Multifrequency EPR Study. Inorg Chem 2011; 50:7106-22. [DOI: 10.1021/ic2006265] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Holm RH, Solomon EI, Majumdar A, Tenderholt A. Comparative molecular chemistry of molybdenum and tungsten and its relation to hydroxylase and oxotransferase enzymes. Coord Chem Rev 2011. [DOI: 10.1016/j.ccr.2010.10.017] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sproules S, Weyhermüller T, Debeer S, Wieghardt K. Six-membered electron transfer series [V(dithiolene)(3)](z) (z = 1+, 0, 1-, 2-, 3-, 4-). An X-ray absorption spectroscopic and density functional theoretical study. Inorg Chem 2010; 49:5241-61. [PMID: 20438108 DOI: 10.1021/ic100344f] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The electronic structures of vanadium centers coordinated by three dithiolene ligands have been elucidated by using a host of physical methods: X-ray crystallography, cyclic voltammetry, electronic absorption, electron paramagnetic resonance (EPR), and X-ray absorption spectroscopies, augmented by density functional theoretical (DFT) calculations. The consensus electronic structure derived from this approach is a V(IV) central ion for the neutral, monoanionic, and dianionic members of this electron transfer series, where the tris(dithiolene) ligand units are (L(3))(4-), (L(3))(5-*), and (L(3))(6-), respectively. The trigonal prismatic monoanions, [V(IV)(L(3)(5-*))](1-) (S = 0), are defined as singlet diradicals where the crystallographically observed dithiolene fold results from strong antiferromagnetic coupling between the metal- and ligand-based magnetic orbitals. These results are contrasted with the corresponding tris(dioxolene)vanadium electron transfer series toward establishing the factors that govern the molecular trigonal prismatic or octahedral geometries in systems with three redox noninnocent ligands.
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Affiliation(s)
- Stephen Sproules
- Max-Planck-Institut für Bioanorganische Chemie, Stiftstrasse 34-36, D-45470 Mülheim an der Ruhr, Germany.
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Birkmann B, Ehlers A, Fröhlich R, Lammertsma K, Hahn F. Metallosupramolecular Complexes Derived from Bis(benzene-o-dithiol) Ligands. Chemistry 2009; 15:4301-11. [DOI: 10.1002/chem.200802560] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Sugimoto H, Suyama K, Sugimoto K, Miyake H, Takahashi I, Hirota S, Itoh S. A New Class of Sulfido/Oxo(dithiolene)−Molybdenum(IV) Complexes Derived from Sulfido/Oxo-Bis(tetrasulfido)molybdenum(IV) Anions. Inorg Chem 2008; 47:10150-7. [DOI: 10.1021/ic800832a] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hideki Sugimoto
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan, Rigaku Corporation, Akishima, Tokyo 196-8666, Japan, and Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, 630-0192 Japan
| | - Koichiro Suyama
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan, Rigaku Corporation, Akishima, Tokyo 196-8666, Japan, and Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, 630-0192 Japan
| | - Kunihisa Sugimoto
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan, Rigaku Corporation, Akishima, Tokyo 196-8666, Japan, and Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, 630-0192 Japan
| | - Hiroyuki Miyake
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan, Rigaku Corporation, Akishima, Tokyo 196-8666, Japan, and Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, 630-0192 Japan
| | - Isao Takahashi
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan, Rigaku Corporation, Akishima, Tokyo 196-8666, Japan, and Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, 630-0192 Japan
| | - Shun Hirota
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan, Rigaku Corporation, Akishima, Tokyo 196-8666, Japan, and Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, 630-0192 Japan
| | - Shinobu Itoh
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka 558-8585, Japan, Rigaku Corporation, Akishima, Tokyo 196-8666, Japan, and Graduate School of Materials Science, Nara Institute of Science and Technology, Ikoma, 630-0192 Japan
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Tenderholt AL, Szilagyi RK, Holm RH, Hodgson KO, Hedman B, Solomon EI. Electronic control of the "Bailar twist" in formally d0-d2 molybdenum tris(dithiolene) complexes: a sulfur K-edge X-ray absorption spectroscopy and density functional theory study. Inorg Chem 2008; 47:6382-92. [PMID: 18517189 DOI: 10.1021/ic800494h] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Sulfur K-edge X-ray absorption spectroscopy (XAS) and density functional theory (DFT) calculations have been used to determine the electronic structures of a series of Mo tris(dithiolene) complexes, [Mo(mdt)3](z) (where mdt = 1,2-dimethylethene-1,2-dithiolate(2-) and z = 2-, 1-, 0), with near trigonal-prismatic geometries (D3h symmetry). These results show that the formally Mo(IV), Mo(V), and Mo(VI) complexes actually have a (dz(2))(2) configuration, that is, remain effectively Mo(IV) despite oxidation. Comparisons with the XAS data of another set of Mo tris(dithiolene) complexes, [Mo(tbbdt)3](z) (where tbbdt = 3,5-ditert-butylbenzene-1,2-dithiolate(2-) and z = 1-, 0), show that both neutral complexes, [Mo(mdt)3] and [Mo(tbbdt)3], have similar electronic structures while the monoanions do not. Calculations reveal that the "Bailar twist" present in the crystal structure of [Mo(tbbdt)3](1-) (D3 symmetry) but not [Mo(mdt)3](1-) (D3h symmetry) is controlled by electronic factors which arise from bonding differences between the mdt and tbbdt ligands. In the former, configuration interaction between the Mo d(z(2)) and a deeper energy, occupied ligand orbital, which occurs in D3 symmetry, destabilizes the Mo d(z(2)) to above another ligand orbital which is half-occupied in the D3h [Mo(mdt)3](1-) complex. This leads to a metal d(1) configuration with no ligand holes (i.e., d(1)[L3](0h)) for [Mo(tbbdt)3](1-) rather than the metal d(2) configuration with one ligand hole (i.e., d(2)[L3](1h)) for [Mo(mdt)3](1-). Thus, the Bailar twist observed in some metal tris(dithiolene) complexes is the result of configuration interaction between metal and ligand orbitals and can be probed experimentally by S K-edge XAS.
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Affiliation(s)
- Adam L Tenderholt
- Department of Chemistry, Stanford University, Stanford, California 94305, USA
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Sugimoto H, Tarumizu M, Miyake H, Tsukube H. Synthesis and Characterization of Bis(dithiolene) Tungsten(VI), -(V), and -(IV) Complexes and Their Reactivities in Coupled Electron–Proton Transfer: A New Series of Active Site Models of Tungstoenzymes. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700602] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Sugimoto H, Tano H, Tajima R, Miyake H, Tsukube H, Ohi H, Itoh S. In Situ Generation of Oxo−sulfidobis(dithiolene)tungsten(VI) Complexes: Active-Site Models for the Aldehyde Ferredoxin Oxidoreductase Family of Tungsten Enzymes. Inorg Chem 2007; 46:8460-2. [PMID: 17854180 DOI: 10.1021/ic7012733] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Oxo-sulfidobis(dithiolene)tungsten(VI) complexes were prepared in situ by the reaction of oxobis(dithiolene)tungsten(V) precursors with hydrosulfide (SH-). The complexes, characterized by UV-vis, electrospray ionization mass spectrometry, IR, and resonance Raman spectroscopies, model the proposed coordination environment and observed hydrolytic reactions of members of the aldehyde ferredoxin oxidoreductase family of tungsten enzymes.
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Affiliation(s)
- Hideki Sugimoto
- Department of Chemistry, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan.
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Kreickmann T, Hahn FE. Benzene-o-dithiolate ligands as versatile building blocks in supramolecular chemistry. Chem Commun (Camb) 2007:1111-20. [PMID: 17347711 DOI: 10.1039/b612726f] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polydentate ligands with benzene-o-dithiolato donor groups are useful building blocks in supramolecular coordination chemistry. The coordination chemistry of bis- and tris(benzene-o-dithiolato) ligands and mixed benzene-o-dithiolato/catecholato ligands is reviewed. These ligands exhibit a versatile coordination chemistry both in solution and in the solid state.
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Affiliation(s)
- Thorsten Kreickmann
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstrasse 36, 48149 Münster, Germany
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Sugimoto H, Tajima R, Sakurai T, Ohi H, Miyake H, Itoh S, Tsukube H. Reversible Sulfurization–Desulfurization of Tungsten Bis(dithiolene) Complexes. Angew Chem Int Ed Engl 2006; 45:3520-2. [PMID: 16634103 DOI: 10.1002/anie.200600640] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hideki Sugimoto
- Department of Chemistry, Graduate School of Science, Osaka City University, Sumiyoshi-ku, Osaka, 558-8585, Japan.
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Sugimoto H, Tajima R, Sakurai T, Ohi H, Miyake H, Itoh S, Tsukube H. Reversible Sulfurization–Desulfurization of Tungsten Bis(dithiolene) Complexes. Angew Chem Int Ed Engl 2006. [DOI: 10.1002/ange.200600640] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Galloway KW, Parkin A, Harte SM, Ferguson A, Murrie M. Tuning the structural motif by tuning the countercation size: from double salts to a 1-D coordination polymer. CrystEngComm 2006. [DOI: 10.1039/b600447d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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