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Gao M, Zhang L, Zhang J. Acid‐Controlled Synthesis of Carboxylate‐Stabilized Ti
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‐Oxo Clusters: Scaling up Preparation, Exchangeable Protecting Ligands, and Photophysical Properties. Chemistry 2019; 25:10450-10455. [DOI: 10.1002/chem.201901671] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/23/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Mei‐Yan Gao
- State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of Sciences Fuzhou Fujian 350002 P.R. China
| | - Lei Zhang
- State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of Sciences Fuzhou Fujian 350002 P.R. China
| | - Jian Zhang
- State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of Sciences Fuzhou Fujian 350002 P.R. China
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2
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Kück JW, Reich RM, Kühn FE. Molecular Epoxidation Reactions Catalyzed by Rhenium, Molybdenum, and Iron Complexes. CHEM REC 2016; 16:349-64. [DOI: 10.1002/tcr.201500233] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Jens W. Kück
- Department of Chemistry and Catalysis Research Center; Technische Universität München (TUM); Lichtenbergstr. 4 D-85747 Garching bei München Germany
| | - Robert M. Reich
- Department of Chemistry and Catalysis Research Center; Technische Universität München (TUM); Lichtenbergstr. 4 D-85747 Garching bei München Germany
| | - Fritz E. Kühn
- Department of Chemistry and Catalysis Research Center; Technische Universität München (TUM); Lichtenbergstr. 4 D-85747 Garching bei München Germany
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3
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Landaeta VR, Rodríguez-Lugo RE. Catalytic oxygenation of organic substrates: Toward greener ways for incorporating oxygen. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2015.01.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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4
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Mindiola DJ, Watson LA, Meyer K, Hillhouse GL. Functionalization of Complexed N 2O in Bis(pentamethylcyclopentadienyl) Systems of Zirconium and Titanium. Organometallics 2014; 33:2760-2769. [PMID: 24954968 PMCID: PMC4059529 DOI: 10.1021/om5002556] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Indexed: 01/19/2023]
Abstract
Methyl triflate reacts with the metastable azoxymetallacyclopentene complex Cp*2Zr(N(O)NCPhCPh), generated in situ from nitrous oxide insertion into the Zr-C bond of Cp*2Zr(η2-PhCCPh) at -78 °C, to afford the salt [Cp*2Zr(N(O)N(Me)CPhCPh)][O3SCF3] (1) in 48% isolated yield. A single-crystal X-ray structure of 1 features a planar azoxymetallacycle with methyl alkylation taking place only at the β-nitrogen position of the former Zr(N(O)NCPhCPh) scaffold. In addition to 1, the methoxy-triflato complex Cp*2Zr(OMe)(O3SCF3) (2) was also isolated from the reaction mixture in 26% yield and fully characterized, including its independent synthesis from the alkylation of Cp*2Zr=O(NC5H5) with MeO3SCF3. Complex 2 could also be observed, spectroscopically, from the thermolysis of 1 (80 °C, 2 days). In contrast to Cp*2Zr(N(O)NPhCCPh), the more stable titanium N2O-inserted analogue, Cp*2Ti(N(O)NCPhCPh), reacts with MeO3SCF3 to afford a 1:1 mixture of regioisomeric salts, [Cp*2Ti(N(O)N(Me)CPhCPh)][O3SCF3] (3) and [Cp*2Ti(N(OMe)NCPhCPh)][O3SCF3] (4), in a combined 65% isolated yield. Single-crystal X-ray diffraction studies of a cocrystal of 3 and 4 show a 1:1 mixture of azoxymetallacyle salts resulting from methyl alkylation at both the β-nitrogen and the β-oxygen of the former Ti(N(O)NCPhCPh ring. As opposed to alkylation reactions, the one-electron reduction of Cp*2Ti(N(O)NCPhCPh) with KC8, followed by encapsulation with the cryptand 2,2,2-Kryptofix, resulted in the isolation of the discrete radical anion [K(2,2,2-Kryptofix)][Cp*2Ti(N(O)NCPhCPh)] (5) in 68% yield. Complex 5 was studied by single-crystal X-ray diffraction, and its solution X-band EPR spectrum suggested a nonbonding σ-type wedge hybrid orbital on titanium, d(z2)/d(x2-y2), houses the unpaired electron, without perturbing the azoxymetallacycle core in Cp*2Ti(N(O)NCPhCPh). Theoretical studies of Ti and the Zr analogue are also presented and discussed.
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5
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Maity B, Koley D. Mechanistic investigation of the reactivity of disilene with nitrous oxide: A DFT study. J Mol Graph Model 2014; 51:50-63. [PMID: 24858255 DOI: 10.1016/j.jmgm.2014.04.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Revised: 04/24/2014] [Accepted: 04/26/2014] [Indexed: 11/30/2022]
Abstract
We have reported the mechanistic investigation of the reaction of N2O addition to disilene, trans-[(TMS)2N(η(1)-Me5C5)SiSi(η(1)-Me5C5)N(TMS)2] (1t), employing density functional theory (BP86/TZVP//BP86/SVP) calculations. The potential energy surfaces of the title reaction are broadly classified under three pathways. Pathway I deals with the direct N2O additions to 1t affording the trans-dioxadisiletane ring compound Pt whereas in the same pathway we report a different bifurcation route from intermediate 2t. This route portrays the isomerization of trans-monooxadisiletane species 2t prior to the second N2O addition, finally leading to the cis-isomeric product Pc. Different possibilities for isomerization of disilene 1t to 1c were studied in pathway II. The cis-disilene (1c) formed can subsequently react with two N2O molecules affording the cis-product Pc. Pathway III details the formation of silanone type intermediate 6, which subsequently combine with another silanone to afford loosely bound intermediates 7 and 8 respectively. The two separated silanone fragments in the isomeric intermediates 7 and 8 can then dimerizes to furnish the desired products. Among all the calculated potential energy surfaces, pathway III remains the most preferred route for disilene oxygenation under normal experimental condition. The present investigation about disilene reactivity will provide a deeper understanding on silylene chemistry and will exhibit promising applicability in main group chemistry as a whole.
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Affiliation(s)
- Bholanath Maity
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur Campus, Mohanpur 741252, India
| | - Debasis Koley
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur Campus, Mohanpur 741252, India.
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6
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Ventura M, Ramírez de Arellano C, Mosquera MEG, Jiménez G, Cuenca T. Synthesis and structural characterization of novel tetranuclear organotitanoxane derivatives. Dalton Trans 2011; 40:5728-33. [PMID: 21509394 DOI: 10.1039/c0dt01393e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of the novel titanoxane compounds, [(TiCl)(TiOH){(Ti)[μ-(η(5)-C(5)Me(4)SiMe(2)O-κO)](2)(μ-O)}(2)(μ-O)] (4) and [{Ti[μ-(η(5)-C(5)Me(4)SiMe(2)O-κO)](μ-O)}(4)] (5) by controlled reaction of the dinuclear titanium oxo complex [{Ti{μ-(η(5)-C(5)Me(4)SiMe(2)O-κO)}Cl](2)(μ-O)] (1) with 2 equiv of LiOH is reported. Complex 4 is innovative and remarkable. It is one of the rare known examples of tetranuclear stable terminal hydroxo titanium complexes, with an open-chained structure, which coincides with the transient metal monohydroxo proposed in the stepwise pathway employed to justify the formation of the hexanuclear complex [{Ti[μ-(η(5)-C(5)Me(4)SiMe(2)O-κO)](μ-O)}(6)] (3) from 1. (1)H DOSY experiments were used to characterize complex 4. In addition, the structures of compound 5 and of precursor 1 were determined by single-crystal X-ray diffraction studies.
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Affiliation(s)
- María Ventura
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871, Alcalá de Henares, Spain
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7
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Neu RC, Otten E, Lough A, Stephan DW. The synthesis and exchange chemistry of frustrated Lewis pair–nitrous oxide complexes. Chem Sci 2011. [DOI: 10.1039/c0sc00398k] [Citation(s) in RCA: 151] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
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8
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Berthet JC, Thuéry P, Ephritikhine M. Formation of Uranium(IV) Oxide Clusters from Uranocene [U(η8-C8H8)2] and Uranyl [UO2X2] Compounds. Inorg Chem 2010; 49:8173-7. [DOI: 10.1021/ic101310z] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jean-Claude Berthet
- CEA Saclay, DSM, IRAMIS, UMR 3299, CEA/CNRS SIS2M, 91191 Gif-sur-Yvette, France
| | - Pierre Thuéry
- CEA Saclay, DSM, IRAMIS, UMR 3299, CEA/CNRS SIS2M, 91191 Gif-sur-Yvette, France
| | - Michel Ephritikhine
- CEA Saclay, DSM, IRAMIS, UMR 3299, CEA/CNRS SIS2M, 91191 Gif-sur-Yvette, France
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Zhang RF, Li CP, Wang QF, Ma CL. Ligand-assisted assembly of polyoxozirconium clusters: syntheses and characterizations of tri- and tetranuclear half-zirconocene complexes. J COORD CHEM 2010. [DOI: 10.1080/00958972.2010.497838] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Ru-Fen Zhang
- a Department of Chemistry , Liaocheng University , Liaocheng 252059, P.R. China
| | - Cui-Ping Li
- a Department of Chemistry , Liaocheng University , Liaocheng 252059, P.R. China
| | - Qing-Feng Wang
- b Department of Chemistry , Taishan University , Taian 271021, P.R. China
| | - Chun-Lin Ma
- a Department of Chemistry , Liaocheng University , Liaocheng 252059, P.R. China
- b Department of Chemistry , Taishan University , Taian 271021, P.R. China
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Neu R, Otten E, Stephan D. Bridging Binding Modes of Phosphine-Stabilized Nitrous Oxide to Zn(C6F5)2. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200905650] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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11
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Neu R, Otten E, Stephan D. Bridging Binding Modes of Phosphine-Stabilized Nitrous Oxide to Zn(C6F5)2. Angew Chem Int Ed Engl 2009; 48:9709-12. [DOI: 10.1002/anie.200905650] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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12
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Otten E, Neu RC, Stephan DW. Complexation of Nitrous Oxide by Frustrated Lewis Pairs. J Am Chem Soc 2009; 131:9918-9. [DOI: 10.1021/ja904377v] [Citation(s) in RCA: 251] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Edwin Otten
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada, M5S 3H6
| | - Rebecca C. Neu
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada, M5S 3H6
| | - Douglas W. Stephan
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada, M5S 3H6
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Laurencin D, Thouvenot R, Boubekeur K, Villain F, Villanneau R, Rohmer MM, Bénard M, Proust A. Experimental and Computational Study of the Framework Fluxionality of Organometallic Derivatives of Polyoxometalates: Analysis of the Effect of the Metal and of the Solvent. Organometallics 2009. [DOI: 10.1021/om8011568] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Danielle Laurencin
- Institut Parisien de Chimie Moléculaire, UMR 7201, Case courrier 42, Université Pierre et Marie Curie Paris 6, 4 place Jussieu, 75252 Paris Cedex 05, France, and Institut de Chimie, UMR 7177, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - René Thouvenot
- Institut Parisien de Chimie Moléculaire, UMR 7201, Case courrier 42, Université Pierre et Marie Curie Paris 6, 4 place Jussieu, 75252 Paris Cedex 05, France, and Institut de Chimie, UMR 7177, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - Kamal Boubekeur
- Institut Parisien de Chimie Moléculaire, UMR 7201, Case courrier 42, Université Pierre et Marie Curie Paris 6, 4 place Jussieu, 75252 Paris Cedex 05, France, and Institut de Chimie, UMR 7177, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - Françoise Villain
- Institut Parisien de Chimie Moléculaire, UMR 7201, Case courrier 42, Université Pierre et Marie Curie Paris 6, 4 place Jussieu, 75252 Paris Cedex 05, France, and Institut de Chimie, UMR 7177, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - Richard Villanneau
- Institut Parisien de Chimie Moléculaire, UMR 7201, Case courrier 42, Université Pierre et Marie Curie Paris 6, 4 place Jussieu, 75252 Paris Cedex 05, France, and Institut de Chimie, UMR 7177, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - Marie-Madeleine Rohmer
- Institut Parisien de Chimie Moléculaire, UMR 7201, Case courrier 42, Université Pierre et Marie Curie Paris 6, 4 place Jussieu, 75252 Paris Cedex 05, France, and Institut de Chimie, UMR 7177, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - Marc Bénard
- Institut Parisien de Chimie Moléculaire, UMR 7201, Case courrier 42, Université Pierre et Marie Curie Paris 6, 4 place Jussieu, 75252 Paris Cedex 05, France, and Institut de Chimie, UMR 7177, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France
| | - Anna Proust
- Institut Parisien de Chimie Moléculaire, UMR 7201, Case courrier 42, Université Pierre et Marie Curie Paris 6, 4 place Jussieu, 75252 Paris Cedex 05, France, and Institut de Chimie, UMR 7177, Université de Strasbourg, 4 rue Blaise Pascal, 67000 Strasbourg, France
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Berthet JC, Thuéry P, Ephritikhine M. Polyimido Clusters of Neodymium and Uranium, Including a Cluster with an M6(μ3-N)8Core. Eur J Inorg Chem 2008. [DOI: 10.1002/ejic.200800947] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Nikiforov GB, Roesky HW, Schulz T, Stalke D, Witt M. On the Quest for New Mixed-Metal μ-Oxo-bridged Complexes: Synthesis of Compounds Containing Transition Metal−Oxygen−Main Group Metal Motifs M−O−M1(M = Ti, Zr; M1= Al, Ga) without Cyclopentadienyl Ligands†. Inorg Chem 2008; 47:6435-43. [DOI: 10.1021/ic800567g] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Buitrago O, Mosquera MEG, Jiménez G, Cuenca T. Organotitanoxanes with Unique Structure among Transition-Element Organometallic Oxide Derivatives. Inorg Chem 2008; 47:3940-2. [DOI: 10.1021/ic8003646] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Olga Buitrago
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Spain
| | - Marta E. G. Mosquera
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Spain
| | - Gerardo Jiménez
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Spain
| | - Tomás Cuenca
- Departamento de Química Inorgánica, Universidad de Alcalá, Campus Universitario, 28871 Alcalá de Henares, Spain
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Tsai YC, Wang PY, Lin KM, Chen SA, Chen JM. Synthesis and reactions of β-diketiminato divanadium(i) inverted-sandwich complexes. Chem Commun (Camb) 2008:205-7. [DOI: 10.1039/b711816c] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Leont'ev AV, Fomicheva OA, Proskurnina MV, Zefirov NS. Modern chemistry of nitrous oxide. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc2001v070n02abeh000631] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Fan H, Caulton KG. 2-Electron reduction of N2O yields a new ligand binding mode: N-Nitrosoimide. Polyhedron 2007. [DOI: 10.1016/j.poly.2007.05.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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20
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Parkin G. Terminal Chalcogenido Complexes of the Transition Metals. PROGRESS IN INORGANIC CHEMISTRY 2007. [DOI: 10.1002/9780470166482.ch1] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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21
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Cummins CC. Three-Coordinate Complexes of “Hard” Ligands: Advances in Synthesis, Structure and Reactivity. PROGRESS IN INORGANIC CHEMISTRY 2007. [DOI: 10.1002/9780470166482.ch7] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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22
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Hou XF, Liu S, Zhang PC, Jin GX. Synthesis and molecular structure of hexanuclear organotitanium ion complex:. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2006.12.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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23
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Donahue JP. Thermodynamic Scales for Sulfur Atom Transfer and Oxo-for-Sulfido Exchange Reactions. Chem Rev 2006; 106:4747-83. [PMID: 17091934 DOI: 10.1021/cr050044w] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- James P Donahue
- Department of Chemistry, Tulane University, 6400 Freret Street, New Orleans, Louisiana 70118-5698, USA.
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Kühn FE, Santos AM, Abrantes M. Mononuclear Organomolybdenum(VI) Dioxo Complexes: Synthesis, Reactivity, and Catalytic Applications. Chem Rev 2006; 106:2455-75. [PMID: 16771456 DOI: 10.1021/cr040703p] [Citation(s) in RCA: 199] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fritz E Kühn
- Instituto Tecnológico e Nuclear, Estrada Nacional No. 10, 2686-953 Sacavem, Portugal.
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25
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Berthet JC, Thuéry P, Ephritikhine M. Unprecedented reduction of the uranyl ion [UO2]2+ into a polyoxo uranium(iv) cluster: Synthesis and crystal structure of the first f-element oxide with a M6(µ3-O)8 core. Chem Commun (Camb) 2005:3415-7. [PMID: 15997282 DOI: 10.1039/b503830h] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The smooth comproportionation reaction of the U(VI) and U(III) complexes UO2(OTf)2 and U(OTf)3, afforded the hexanuclear U(IV) oxide cluster [U6(micro3-O)8(micro2-OTf)8(py)8], a rare example of a metal oxide with a M6(micro3-O)8 core.
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Affiliation(s)
- Jean-Claude Berthet
- Service de Chimie Moléculaire, DSM, DRECAM, CNRS URA 331, CEA Saclay, 91191 Gif- sur-Yvette, France.
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Paulat F, Kuschel T, Näther C, Praneeth VKK, Sander O, Lehnert N. Spectroscopic Properties and Electronic Structure of Pentammineruthenium(II) Dinitrogen Oxide and Corresponding Nitrosyl Complexes: Binding Mode of N2O and Reactivity. Inorg Chem 2004; 43:6979-94. [PMID: 15500336 DOI: 10.1021/ic049302i] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The spectroscopic properties and the electronic structure of the only nitrous oxide complex existing in isolated form, [Ru(NH(3))(5)(N(2)O)]X(2) (1, X = Br(-), BF(4)(-)), are investigated in detail in comparison to the nitric oxide precursor, [Ru(NH(3))(5)(NO)]X(3) (2). IR and Raman spectra of 1 and of the corresponding (15)NNO labeled complex are presented and assigned with the help of normal coordinate analysis (NCA) and density functional (DFT) calculations. This allows for the identification of the Ru-N(2)O stretch at approximately 300 cm(-)(1) and for the unambiguous definition of the binding mode of the N(2)O ligand as N-terminal. Obtained force constants are 17.3, 9.6, and 1.4 mdyn/A for N-N, N-O, and Ru-N(2)O, respectively. The Ru(II)-N(2)O bond is dominated by pi back-donation, which, however, is weak compared to the NO complex. This bond is further weakened by Coulomb repulsion between the fully occupied t(2g) shell of Ru(II) and the HOMO of N(2)O. Hence, nitrous oxide is an extremely weak ligand to Ru(II). Calculated free energies and formation constants for [Ru(NH(3))(5)(L)](2+) (L = NNO, N(2), OH(2)) are in good agreement with experiment. The observed intense absorption at 238 nm of 1 is assigned to the t(2g) --> pi(*) charge transfer transition. These data are compared in detail to the spectroscopic and electronic structural properties of NO complex 2. Finally, the transition metal centered reaction of nitrous oxide to N(2) and H(2)O is investigated. Nitrous oxide is activated by back-donation. Initial protonation leads to a weakening of the N-O bond and triggers electron transfer from the metal to the NN-OH ligand through the pi system. The implications of this mechanism for biological nitrous oxide reduction are discussed.
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Affiliation(s)
- Florian Paulat
- Institut für Anorganische Chemie, Christian-Albrechts-Universität Kiel, Olshausenstrasse 40, D-24098 Kiel, Germany
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Villanneau R, Artero V, Laurencin D, Herson P, Proust A, Gouzerh P. Organometallic polyoxometalates: synthesis and structural analysis of (η6-arene) ruthenium-containing polyoxomolybdates. J Mol Struct 2003. [DOI: 10.1016/s0022-2860(03)00356-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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28
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Roesky HW, Haiduc I, Hosmane NS. Organometallic oxides of main group and transition elements downsizing inorganic solids to small molecular fragments. Chem Rev 2003; 103:2579-95. [PMID: 12848580 DOI: 10.1021/cr020376q] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Herbert W Roesky
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
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Bai G, Roesky HW, Li J, Labahn T, Cimpoesu F, Magull J. Synthesis, Structural Characterization, and Theoretical Treatment of an Unusual Organozirconium Hydroxide with the [Zr6(μ4-O)(μ-O)4(μ-OH)8] Core. Organometallics 2003. [DOI: 10.1021/om0301132] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Guangcai Bai
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Herbert W. Roesky
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Jiyang Li
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Thomas Labahn
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Fanica Cimpoesu
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Jörg Magull
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
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30
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Artero V, Proust A, Herson P, Gouzerh P. Interplay of cubic building blocks in (et6-arene)ruthenium-containing tungsten and molybdenum oxides. Chemistry 2001; 7:3901-10. [PMID: 11596932 DOI: 10.1002/1521-3765(20010917)7:18<3901::aid-chem3901>3.0.co;2-3] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A series of molybdenum and tungsten organometallic oxides containing [Ru(arene)]2+ units (arene =p-cymene, C6Me6) was obtained by condensation of [[Ru(arene)Cl2]2] with oxomolybdates and oxotungstates in aqueous or nonaqueous solvents. The crystal structures of [[Ru(eta6-C6Me6]]4W4O16], [[Ru(eta6-p-MeC6H4iPr]]4W2O10], [[[Ru-(eta6-p-MeC6H4iPr)]2(mu-OH)3]2][[Ru(eta6-p-MeC6H4iPr)]2W8O28(OH)2[Ru(eta6-p-MeC6H4iPr)(H2O)]2], and [[Ru(eta6-C6Me6)]2M5O18[Ru(eta6-C6Me6)(H2O)]] (M = Mo, W) have been determined. While the windmill-type clusters [[Ru(eta6-arene)]4(MO3)4(mu3-O)4] (M = Mo, W; arene =p-MeC6H4iPr, C6Me6), the face-sharing double cubane-type cluster [[Ru(eta6-p-MeC6H4iPr)]4(WO2)2(mu3-O)4(mu4-O)2], and the dimeric cluster [[Ru(eta6-p-MeC6H4iPr)(WO3)3(mu3-O)3(mu3-OH)Ru(eta6-pMeC6H4iPr)(H2O)]2(mu-WO2)2]2- are based on cubane-like units, [(Ru(eta6-C6Me6)]2M5O18[Ru(eta6-C6Me6)(H2O)]] (M = Mo, W) are more properly described as lacunary Lindqvist-type polyoxoanions supporting three ruthenium centers. Precubane clusters [[Ru(eta6-arene)](MO3)2(mu-O)3(mu3-O)]6- are possible intermediates in the formation of these clusters. The cluster structures are retained in solution, except for [[Ru(eta6-p-MeC6H4iPr)]4Mo4O16], which isomerizes to the triple-cubane form.
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Affiliation(s)
- V Artero
- Laboratoire de Chimie Inorganique et Matériaux Moléculaires, Unité CNRS 7071, Université Pierre et Marie Curie, Paris, France
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31
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Pamplin CB, Ma ES, Safari N, Rettig SJ, James BR. The nitrous oxide complex, RuCl(2)(eta(1)-N(2)O)(P-N)(PPh(3)) (P-N =[o-(N,N-dimethylamino)phenyl]diphenylphosphine); low temperature conversion of N(2)O to N(2) and O(2). J Am Chem Soc 2001; 123:8596-7. [PMID: 11525668 DOI: 10.1021/ja0106319] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- C B Pamplin
- Department of Chemistry, University of British Columbia, Vancouver, B.C. V6T 1Z1, Canada
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32
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Cherry JP, Johnson AR, Baraldo LM, Tsai YC, Cummins CC, Kryatov SV, Rybak-Akimova EV, Capps KB, Hoff CD, Haar CM, Nolan SP. On the origin of selective nitrous oxide N-N bond cleavage by three-coordinate molybdenum(III) complexes. J Am Chem Soc 2001; 123:7271-86. [PMID: 11472154 DOI: 10.1021/ja0031063] [Citation(s) in RCA: 107] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reaction of Mo(N[R]Ar)(3) (R = (t)Bu or C(CD(3))(2)CH(3)) with N(2)O gives rise exclusively to a 1:1 mixture of nitride NMo(N[R]Ar)(3) and nitrosyl ONMo(N[R]Ar)(3), rather than the known oxo complex OMo(N[R]Ar)(3) and dinitrogen. Solution calorimetry measurements were used to determine the heat of reaction of Mo(N[R]Ar)(3) with N(2)O and, independently, the heat of reaction of Mo(N[R]Ar)(3) with NO. Derived from the latter measurements is an estimate (155.3 +/- 3.3 kcal.mol(-1)) of the molybdenum-nitrogen bond dissociation enthalpy for the terminal nitrido complex, NMo(N[R]Ar)(3). Comparison of the new calorimetry data with those obtained previously for oxo transfer to Mo(N[R]Ar)(3) shows that the nitrous oxide N-N bond cleavage reaction is under kinetic control. Stopped-flow kinetic measurements revealed the reaction to be first order in both Mo(N[R]Ar)(3) and N(2)O, consistent with a mechanism featuring post-rate-determining dinuclear N-N bond scission, but also consistent with cleavage of the N-N bond at a single metal center in a mechanism requiring the intermediacy of nitric oxide. The new 2-adamantyl-substituted molybdenum complex Mo(N[2-Ad]Ar)(3) was synthesized and found also to split N(2)O, resulting in a 1:1 mixture of nitrosyl and nitride products; the reaction exhibited first-order kinetics and was found to be ca. 6 times slower than that for the tert-butyl-substituted derivative. Discussed in conjunction with studies of the 2-adamantyl derivative Mo(N[2-Ad]Ar)(3) is the role of ligand-imposed steric constraints on small-molecule, e.g. N(2) and N(2)O, activation reactivity. Bradley's chromium complex Cr(N(i)Pr(2))(3) was found to be competitive with Mo(N[R]Ar)(3) for NO binding, while on its own exhibiting no reaction with N(2)O. Competition experiments permitted determination of ratios of second-order rate constants for NO binding by the two molybdenum complexes and the chromium complex. Analysis of the product mixtures resulting from carrying out the N(2)O cleavage reactions with Cr(N(i)Pr(2))(3) present as an in situ NO scavenger rules out as dominant any mechanism involving the intermediacy of NO. Simplest and consistent with all the available data is a post-rate-determining bimetallic N-N scission process. Kinetic funneling of the reaction as indicated is taken to be governed by the properties of nitrous oxide as a ligand, coupled with the azophilic nature of three-coordinate molybdenum(III) complexes.
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Affiliation(s)
- J P Cherry
- Contribution from the Departments of Chemistry, Room 2-227, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, USA
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33
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Varkey SP, Schormann M, Pape T, Roesky HW, Noltemeyer M, Herbst-Irmer R, Schmidt HG. Organotitanoxanes [C(5)Me(5)TiMe(2)](2)(mu-O) and [(C(5)Me(5)(4)Ti(4)Me(2)](mu-O)(5): synthesis and crystal structures. Inorg Chem 2001; 40:2427-9. [PMID: 11327924 DOI: 10.1021/ic0013072] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S P Varkey
- Institut für Anorganische Chemie, Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
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34
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High-nuclearity paramagnetic 3d-metal complexes with oxygen- and nitrogen-donor ligands. ADVANCES IN INORGANIC CHEMISTRY 2001. [DOI: 10.1016/s0898-8838(05)52001-4] [Citation(s) in RCA: 182] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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35
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Jaitner P, Veciana J, Sporer C, Kopacka H, Wurst K, Ruiz-Molina D. Synthesis, Crystal Structure, and Spectroscopic and Magnetic Properties of a New [Co4O(OOCNC9H18)6] Cluster. Organometallics 2000. [DOI: 10.1021/om0003335] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Peter Jaitner
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria, and Institut de Ciència de Materials de Barcelona (CSIC), Campus de la UAB, E-08193 Cerdanyola, Spain
| | - Jaume Veciana
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria, and Institut de Ciència de Materials de Barcelona (CSIC), Campus de la UAB, E-08193 Cerdanyola, Spain
| | - Christian Sporer
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria, and Institut de Ciència de Materials de Barcelona (CSIC), Campus de la UAB, E-08193 Cerdanyola, Spain
| | - Holger Kopacka
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria, and Institut de Ciència de Materials de Barcelona (CSIC), Campus de la UAB, E-08193 Cerdanyola, Spain
| | - Klaus Wurst
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria, and Institut de Ciència de Materials de Barcelona (CSIC), Campus de la UAB, E-08193 Cerdanyola, Spain
| | - Daniel Ruiz-Molina
- Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 52a, A-6020 Innsbruck, Austria, and Institut de Ciència de Materials de Barcelona (CSIC), Campus de la UAB, E-08193 Cerdanyola, Spain
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36
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37
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Guzyr OI, Prust J, Roesky HW, Lehmann C, Teichert M, Cimpoesu F. Hydrolysis of (η5-C5Me5)MMe4 (M = Mo, W) and the Formation of Organometallic Oxides with μ3-CH Methylidyne and μ-CH2 Methylidene Groups: Model Compounds for Catalysis on Metal Oxide Surfaces. Organometallics 2000. [DOI: 10.1021/om000062y] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Olexandr I. Guzyr
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Jörg Prust
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Herbert W. Roesky
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Christopher Lehmann
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Markus Teichert
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
| | - Fanica Cimpoesu
- Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany
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38
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Khoroshun DV, Musaev DG, Morokuma K. Does Reaction of Three-Coordinate Molybdenum(III) with N2O Proceed via the Same Mechanism as with N2? A Theoretical Study. Organometallics 1999. [DOI: 10.1021/om990396r] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dmitry V. Khoroshun
- Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Djamaladdin G. Musaev
- Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Keiji Morokuma
- Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322
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39
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Fickert C, Nagel V, Kiefer W, Wahl G, Sundermeyer J. A Raman spectroscopic study of molybdenum and tungsten dioxo complexes containing related cyclopentadienyl and trispyrazolylborato ligands. J Mol Struct 1999. [DOI: 10.1016/s0022-2860(98)00837-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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40
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Oxide bridged mixed metal organometallics: the reaction of Ru4(CO)13[μ3-PN(R)2] R=iPr, Cy with Cp*W(O)2CCPh. J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(98)01037-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Ellis WW, Gavrilova A, Liable-Sands L, Rheingold AL, Bosnich B. Homogeneous Catalysis. Metallocene Catalysts for [3+2] Nitrone−Olefin Cycloaddition Reactions. Organometallics 1999. [DOI: 10.1021/om980532c] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- William W. Ellis
- Department of Chemistry, The University of Chicago, 5735 S. Ellis Avenue, Chicago, Illinois 60637, and Department of Biochemistry, University of Delaware, Newark, Delaware 19716
| | - Anna Gavrilova
- Department of Chemistry, The University of Chicago, 5735 S. Ellis Avenue, Chicago, Illinois 60637, and Department of Biochemistry, University of Delaware, Newark, Delaware 19716
| | - Louise Liable-Sands
- Department of Chemistry, The University of Chicago, 5735 S. Ellis Avenue, Chicago, Illinois 60637, and Department of Biochemistry, University of Delaware, Newark, Delaware 19716
| | - Arnold L. Rheingold
- Department of Chemistry, The University of Chicago, 5735 S. Ellis Avenue, Chicago, Illinois 60637, and Department of Biochemistry, University of Delaware, Newark, Delaware 19716
| | - B. Bosnich
- Department of Chemistry, The University of Chicago, 5735 S. Ellis Avenue, Chicago, Illinois 60637, and Department of Biochemistry, University of Delaware, Newark, Delaware 19716
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42
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Daff PJ, Legzdins P, Rettig SJ. The First Nitrosyl Complexes of Niobium and Tantalum. J Am Chem Soc 1998. [DOI: 10.1021/ja9738079] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- P. James Daff
- Department of Chemistry The University of British Columbia Vancouver, British Columbia, Canada V6T 1Z1
| | - Peter Legzdins
- Department of Chemistry The University of British Columbia Vancouver, British Columbia, Canada V6T 1Z1
| | - Steven J. Rettig
- Department of Chemistry The University of British Columbia Vancouver, British Columbia, Canada V6T 1Z1
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43
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Johnson AR, Davis WM, Cummins CC, Serron S, Nolan SP, Musaev DG, Morokuma K. Four-Coordinate Molybdenum Chalcogenide Complexes Relevant to Nitrous Oxide N−N Bond Cleavage by Three-Coordinate Molybdenum(III): Synthesis, Characterization, Reactivity, and Thermochemistry. J Am Chem Soc 1998. [DOI: 10.1021/ja971491z] [Citation(s) in RCA: 98] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Adam R. Johnson
- Contribution from the Department of Chemistry Room 2-227, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - William M. Davis
- Contribution from the Department of Chemistry Room 2-227, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Christopher C. Cummins
- Contribution from the Department of Chemistry Room 2-227, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Scafford Serron
- Contribution from the Department of Chemistry Room 2-227, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Steven P. Nolan
- Contribution from the Department of Chemistry Room 2-227, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Djamaladdin G. Musaev
- Contribution from the Department of Chemistry Room 2-227, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322
| | - Keiji Morokuma
- Contribution from the Department of Chemistry Room 2-227, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307, Department of Chemistry, University of New Orleans, New Orleans, Louisiana 70148, Cherry L. Emerson Center for Scientific Computation and Department of Chemistry, Emory University, Atlanta, Georgia 30322
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44
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Gouzerh P, Proust A. Main-Group Element, Organic, and Organometallic Derivatives of Polyoxometalates. Chem Rev 1998; 98:77-112. [PMID: 11851500 DOI: 10.1021/cr960393d] [Citation(s) in RCA: 671] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pierre Gouzerh
- Laboratoire de Chimie des Métaux de Transition, URA CNRS No. 419, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France
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45
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Kirsten G, G�rls H, Seidel W. Mesityloxomolybd�n- und -wolfram-Verbindungen. I. Die Struktur von LiMoO2Me2Mes(OEt2)2. Z Anorg Allg Chem 1997. [DOI: 10.1002/zaac.19976231030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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46
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Stewart PJ, Blake AJ, Mountford P. Titanium Imido Complexes Supported by Amidinate Ligands: Synthesis, Solution Dynamics, and Solid State Structures. Inorg Chem 1997; 36:3616-3622. [PMID: 11670052 DOI: 10.1021/ic9702274] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reaction of Li[PhC(NSiMe(3))(2)] with the complexes [Ti(NR)Cl(2)(py)(3)] affords the corresponding (N,N'-bis(trimethylsilyl)benzamidinato)titanium imido derivatives [Ti(NR){PhC(NSiMe(3))(2)}Cl(py)(2)] [R = Bu(t) (1), 2,6-C(6)H(3)Me(2) (2), 2,6-C(6)H(3)Pr(i)(2) (3)], which, in solution, exist in temperature-dependent, dynamic equilibrium with their mono(pyridine) homologues [Ti(NR){PhC(NSiMe(3))(2)}Cl(py)] and free pyridine. Kinetic and thermodynamic data for these processes are reported, and the relative contributions of the DeltaH and DeltaS terms associated with all three equilibria are identified. The arylimido complexes 2 and 3 may also be prepared by treating 1 with the appropriate arylamine. Reaction of Li[MeC(NC(6)H(11))(2)] with [Ti(NBu(t))Cl(2)(py)(3)] gives the binuclear N,N'-bis(cyclohexyl)acetamidinato derivative [Ti(2)(&mgr;-NBu(t))(2){MeC(NC(6)H(11))(2)}(2)Cl(2)] (4). The X-ray structures of 2 and 4 have been determined. Crystal data for 2: triclinic, P&onemacr;, a = 11.219(5) Å, b = 12.131(6) Å, c = 13.208(7) Å, alpha = 80.34(5) degrees, beta = 87.41(4) degrees, gamma = 75.13(3) degrees, V = 1722.1(15) Å(3), Z = 2, R = 0.054, R(w) = 0.056. Crystal data for 4: triclinic, P&onemacr;, a = 10.455(3) Å, b = 10.637(5) Å, c = 11.024(3) Å, alpha = 90.52(4) degrees, beta = 112.62(3) degrees, gamma = 114.10(3) degrees, V = 1012.8(10) Å(3), Z = 1, R = 0.0453, R(w) = 0.0495.
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Affiliation(s)
- Peter J. Stewart
- Department of Chemistry, University of Nottingham, Nottingham NG7 2RD, U.K
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47
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Aistars A, Newton C, Rübenstahl T, Doherty NM. Convenient Synthesis of Dichloro(oxo)(pentamethylcyclopentadienyl)vanadium(V), (η-C5Me5)V(O)Cl2. Organometallics 1997. [DOI: 10.1021/om960625z] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Arnis Aistars
- Department of Chemistry, 516 Chemical Sciences 1, University of California, Irvine, California 92697-2025
| | - Claire Newton
- Department of Chemistry, 516 Chemical Sciences 1, University of California, Irvine, California 92697-2025
| | - Thilo Rübenstahl
- Department of Chemistry, 516 Chemical Sciences 1, University of California, Irvine, California 92697-2025
| | - Nancy M. Doherty
- Department of Chemistry, 516 Chemical Sciences 1, University of California, Irvine, California 92697-2025
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48
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Stewart PJ, Blake AJ, Mountford P. Mononuclear Niobium Imido and Oxo Complexes Supported by N,N'-Bis(trimethylsilyl)benzamidinate Ligands. X-ray Structures of [Nb(NBu(t)){PhC(NSiMe(3))(2)}Cl(2)(py)] and [Nb(O){(4-C(6)H(4)Me)C(NSiMe(3))(2)}(2)Cl]. Inorg Chem 1997; 36:1982-1986. [PMID: 11669808 DOI: 10.1021/ic961391e] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peter J. Stewart
- Department of Chemistry, University of Nottingham, Nottingham NG7 2RD, U.K
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49
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Kim JH, Hong E, Kim J, Do Y. Oxidation of Tricarbonylmolybdacarborane. 1. First Examples of Oxomolybda(VI)carboranes. Inorg Chem 1996. [DOI: 10.1021/ic960223j] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jae-Hak Kim
- Department of Chemistry and Center for Molecular Science, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea, and Department of Chemistry, Kongju National University, Kongju 314-701, Korea
| | - Eunkee Hong
- Department of Chemistry and Center for Molecular Science, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea, and Department of Chemistry, Kongju National University, Kongju 314-701, Korea
| | - Jinkwon Kim
- Department of Chemistry and Center for Molecular Science, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea, and Department of Chemistry, Kongju National University, Kongju 314-701, Korea
| | - Youngkyu Do
- Department of Chemistry and Center for Molecular Science, Korea Advanced Institute of Science and Technology, Taejon 305-701, Korea, and Department of Chemistry, Kongju National University, Kongju 314-701, Korea
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50
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Elcesser WL, Sörlie M, Hubbard JL. Structure and Reactivity of (η-C5R5)Mo(NO)2−Halide, −Halomethyl, and −Alkyl Complexes: Consecutive Aerobic Methylene and Nitrosyl Ligand Oxidation. Organometallics 1996. [DOI: 10.1021/om960028c] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wendy L. Elcesser
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322-0300
| | - Morten Sörlie
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322-0300
| | - John L. Hubbard
- Department of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322-0300
| |
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