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Pecak J, Fleissner S, Veiros LF, Pittenauer E, Stöger B, Kirchner K. Synthesis and Catalytic Reactivity of Cobalt Pincer Nitrosyl Hydride Complexes. Organometallics 2021; 40:278-285. [PMID: 33519014 PMCID: PMC7842137 DOI: 10.1021/acs.organomet.0c00755] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Indexed: 11/30/2022]
Abstract
The synthesis, characterization, and catalytic activity of low-spin {CoNO}8 pincer complexes of the type [Co(PCP)(NO)(H)] are described. These compounds are obtained either by reacting [Co(PCP)(κ2-BH4)] with NO and Et3N or, alternatively, by reacting [Co(PCP)(NO)]+ with boranes, such as NH3·BH3 in solution. The five-coordinate, diamagnetic Co(III) complex [Co(PCPNMe-iPr)(NO)(H)] was found to be the active species in the hydroboration of alkenes with anti-Markovnikov selectivity. A range of aromatic and aliphatic alkenes were efficiently converted with pinacolborane (HBpin) under mild conditions in good to excellent yield. Mechanistic insight into the catalytic reaction is provided by means of isotope labeling, NMR spectroscopy, and APCI/ESI-MS as well as DFT calculations.
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Affiliation(s)
- Jan Pecak
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria
| | - Sarah Fleissner
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria
| | - Luis F Veiros
- Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Ernst Pittenauer
- Institute of Chemical Technologies and Analytics, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria
| | - Berthold Stöger
- X-Ray Center, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria
| | - Karl Kirchner
- Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9, A-1060 Vienna, Austria
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2
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Krishnan VM, Arman HD, Tonzetich ZJ. Preparation and reactivity of a square-planar PNP cobalt(ii)–hydrido complex: isolation of the first {Co–NO}8–hydride. Dalton Trans 2018; 47:1435-1441. [DOI: 10.1039/c7dt04339b] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The synthesis of a square-planar cobalt(ii) hydrido complex supported by a pyrrole-based PNP ligand has been reinvestigated and its reactivity with various small molecules examined.
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Affiliation(s)
- V. Mahesh Krishnan
- Department of Chemistry
- University of Texas at San Antonio(UTSA)
- San Antonio
- USA
| | - Hadi D. Arman
- Department of Chemistry
- University of Texas at San Antonio(UTSA)
- San Antonio
- USA
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3
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Wiedner ES, Chambers MB, Pitman CL, Bullock RM, Miller AJM, Appel AM. Thermodynamic Hydricity of Transition Metal Hydrides. Chem Rev 2016; 116:8655-92. [PMID: 27483171 DOI: 10.1021/acs.chemrev.6b00168] [Citation(s) in RCA: 298] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Transition metal hydrides play a critical role in stoichiometric and catalytic transformations. Knowledge of free energies for cleaving metal hydride bonds enables the prediction of chemical reactivity, such as for the bond-forming and bond-breaking events that occur in a catalytic reaction. Thermodynamic hydricity is the free energy required to cleave an M-H bond to generate a hydride ion (H(-)). Three primary methods have been developed for hydricity determination: the hydride transfer method establishes hydride transfer equilibrium with a hydride donor/acceptor pair of known hydricity, the H2 heterolysis method involves measuring the equilibrium of heterolytic cleavage of H2 in the presence of a base, and the potential-pKa method considers stepwise transfer of a proton and two electrons to give a net hydride transfer. Using these methods, over 100 thermodynamic hydricity values for transition metal hydrides have been determined in acetonitrile or water. In acetonitrile, the hydricity of metal hydrides spans a range of more than 50 kcal/mol. Methods for using hydricity values to predict chemical reactivity are also discussed, including organic transformations, the reduction of CO2, and the production and oxidation of hydrogen.
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Affiliation(s)
- Eric S Wiedner
- Pacific Northwest National Laboratory , Richland, Washington 99352, United States
| | - Matthew B Chambers
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Catherine L Pitman
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - R Morris Bullock
- Pacific Northwest National Laboratory , Richland, Washington 99352, United States
| | - Alexander J M Miller
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
| | - Aaron M Appel
- Pacific Northwest National Laboratory , Richland, Washington 99352, United States
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4
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Diaz J, Rich K, Munie S, Zoch CR, Hubbard JL, Larsen AS. Reactivity of electrophilic Cp*Ru(NO) complex towards alcohols. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.03.028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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5
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Jiang Y, Huang W, Schmalle HW, Blacque O, Fox T, Berke H. Efficient Lewis Acid Promoted Alkene Hydrogenations Using Dinitrosyl Rhenium(−I) Hydride Catalysts. Organometallics 2013. [DOI: 10.1021/om400733u] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Yanfeng Jiang
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstraße 190, CH-8037, Zurich, Switzerland
| | - Wenjing Huang
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstraße 190, CH-8037, Zurich, Switzerland
| | - Helmut W. Schmalle
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstraße 190, CH-8037, Zurich, Switzerland
| | - Olivier Blacque
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstraße 190, CH-8037, Zurich, Switzerland
| | - Thomas Fox
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstraße 190, CH-8037, Zurich, Switzerland
| | - Heinz Berke
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstraße 190, CH-8037, Zurich, Switzerland
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6
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Jiang Y, Blacque O, Berke H. Probing the catalytic potential of chloro nitrosyl rhenium(I) complexes. Dalton Trans 2011; 40:2578-87. [PMID: 21286595 DOI: 10.1039/c0dt00842g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reduction of the mononitrosyl Re(II) salt [NMe(4)](2)[ReCl(5)(NO)] (1) with zinc in acetonitrile afforded the Re(i) dichloride complex [ReCl(2)(NO)(CH(3)CN)(3)] (2). Subsequent ligand substitution reactions with PCy(3), PiPr(3) and P(p-tolyl)(3) afforded the bisphosphine Re(i) complexes [ReCl(2)(NO)(PR(3))(2)(CH(3)CN)] (3, R = Cy a, iPr b, p-tolyl c) in good yields. The acetonitrile ligand in 3 is labile, permitting its replacement with H(2) (1 bar) to afford the dihydrogen Re(I) complexes [ReCl(2)(NO)(PR(3))(2)(η(2)-H(2))] (4, R = Cy a, iPr b). The catalytic activity of 2, 3 and 4 in hydrogen-related catalyses including dehydrocoupling of Me(2)NH·BH(3), dehydrogenative silylation of styrenes, and hydrosilylation of ketones and aryl aldehydes were investigated, with the main focus on phosphine and halide effects. In the dehydrocoupling of Me(2)NH·BH(3), the phosphine-free complex 2 exhibits the same activity as the bisphosphine-substituted systems. In the dehydrogenative silylation of styrenes, 3a and 4a bearing PCy(3) ligands exhibit high catalytic activities. Monochloro Re(I) hydrides [Re(Cl)(H)(NO)(PR(3))(2)(CH(3)CN)] (5, R = Cy a, iPr b) were proven to be formed in the initiation pathway. The phosphine-free complex 2 showed in dehydrogenative silylations even higher activity than the bisphosphine derivatives, which further emphasizes the importance of a facile phosphine dissociation in the catalytic process. In the hydrosilylation of ketones and aryl aldehydes, at least one rhenium-bound phosphine is required to ensure high catalytic activity.
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Affiliation(s)
- Yanfeng Jiang
- Anorganisch-chemisches Institut, Universität Zürich. Winterthurerstr. 190, CH-8037, Zürich, Schweiz
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7
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Nitrosyl derivatives of the unsaturated dihydrides [Mn2(μ-H)2(CO)6(μ-L2)] (L2 = Ph2PCH2PPh2, (EtO)2POP(OEt)2). J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2010.09.079] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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8
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Fraga-Hernández J, Blacque O, Berke H. Bis[1,3-bis-(2,4,6-trimethyl-phen-yl)-2,3-dihydro-1H-imidazol-2-yl-idene]dinitros-yl(tetra-hydro-borato-κH,H')tungsten(0). Acta Crystallogr Sect E Struct Rep Online 2010; 67:m94-5. [PMID: 21522608 PMCID: PMC3050354 DOI: 10.1107/s1600536810052426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Accepted: 12/14/2010] [Indexed: 11/23/2022]
Abstract
In the title paramagnetic 19-electron neutral complex, [W(BH4)(C21H24N2)2(NO)2], the W(0) atom is coordinated by two 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes) carbene ligands, two NO groups and two H atoms of an η2-tetrahydroborate ligand. Depending on the number of coordination sites (n) assigned to the BH4− ligand, the coordination geometry of the W atom may either be described as approximately trigonal–bipyramidal (n = 1) or as very distorted octahedral with the bridging H atoms filling two coordination positions (n = 2). In the latter case, the coplanar NO groups and bridging H atoms (r.m.s. deviation = 0.032 Å) form one octahedral plane, with mutually trans-oriented carbene ligands. In the crystal, molecules are connected via C—H⋯O interactions.
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Affiliation(s)
- Javier Fraga-Hernández
- Institute of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland
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9
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Jiang Y, Hess J, Fox T, Berke H. Rhenium Hydride/Boron Lewis Acid Cocatalysis of Alkene Hydrogenations: Activities Comparable to Those of Precious Metal Systems. J Am Chem Soc 2010; 132:18233-47. [DOI: 10.1021/ja107187r] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yanfeng Jiang
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8037 Zürich, Switzerland
| | - Jeannine Hess
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8037 Zürich, Switzerland
| | - Thomas Fox
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8037 Zürich, Switzerland
| | - Heinz Berke
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8037 Zürich, Switzerland
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10
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Fraga-Hernández J, Blacque O, Berke H. Bis[1,3-bis-(2,4,6-trimethyl-phen-yl)-2,3-dihydro-1H-imidazol-2-yl-idene]dichloridodinitro-syltungsten(II) tetra-hydro-furan-d(8) monosolvate. Acta Crystallogr Sect E Struct Rep Online 2010; 67:m31. [PMID: 21522555 PMCID: PMC3050297 DOI: 10.1107/s1600536810050099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Accepted: 11/30/2010] [Indexed: 05/30/2023]
Abstract
The mol-ecular structure of the title compound, [WCl(2)(NO)(2)(C(21)H(24)N(2))(2)]·C(4)D(8)O, displays a distorted octa-hedral arrangement around the W atom with two trans 1,3-bis-(2,4,6-trimethyl-phen-yl)imidazol-2-yl-idene (IMes) carbene ligands in axial positions. The four equatorial positions are occupied by nitrosyl and chloride ligands, which are trans to each other. The C(carbene)-W-C(carbene) bond angle of 173.44 (18)° and the Cl-W-N(nitros-yl) bond angles of 171.34 (11) and 171.32 (13)° deviate only slightly from linearity. The distortion comes from the nitrosyl and chloride ligands which are not fully coplanar since the two N atoms deviate from the WCl(2) plane by -0.279 (4) and 0.272 (4) Å, respectively. An inter-molecular C-H⋯O inter-action connects the organometallic mol-ecule and the tetra-hydro-furan-d(8) solvent mol-ecule.
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Affiliation(s)
- Javier Fraga-Hernández
- Institut of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland
| | - Olivier Blacque
- Institut of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland
| | - Heinz Berke
- Institut of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland
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11
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Jiang Y, Blacque O, Fox T, Frech CM, Berke H. Facile synthetic access to rhenium(II) complexes: activation of carbon-bromine bonds by single-electron transfer. Chemistry 2010; 16:2240-9. [PMID: 20066700 DOI: 10.1002/chem.200902600] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The five-coordinated Re(I) hydride complexes [Re(Br)(H)(NO)(PR(3))(2)] (R=Cy 1 a, iPr 1 b) were reacted with benzylbromide, thereby affording the 17-electron mononuclear Re(II) hydride complexes [Re(Br)(2)(H)(NO)(PR(3))(2)] (R=Cy 3 a, iPr 3 b), which were characterized by EPR, cyclic voltammetry, and magnetic susceptibility measurements. In the case of dibromomethane or bromoform, the reaction of 1 afforded Re(II) hydrides 3 in addition to Re(I) carbene hydrides [Re(=CHR(1))(Br)(H)(NO)(PR(3))(2)] (R(1)=H 4, Br 5; R=Cy a, iPr b) in which the hydride ligand is positioned cis to the carbene ligand. For comparison, the dihydrogen Re(I) dibromide complexes [Re(Br)(2)(NO)(PR(3))(2)(eta(2)-H(2))] (R=Cy 2 a, iPr 2 b) were reacted with allyl- or benzylbromide, thereby affording the monophosphine Re(II) complex salts [R(3)PCH(2)R'][Re(Br)(4)(NO)(PR(3))] (R'=-CH=CH(2) 6, Ph 7). The reduction of Re(II) complexes has also been examined. Complex 3 a or 3 b can be reduced by zinc to afford 1 a or 1 b in high yield. Under catalytic conditions, this reaction enables homocoupling of benzylbromide (turnover frequency (TOF): 3 a 150, 3 b 134 h(-1)) or allylbromide (TOF: 3 a 575, 3 b 562 h(-1)). The reaction of 6 a and 6 b with zinc in acetonitrile affords in good yields the monophosphine Re(I) complexes [Re(Br)(2)(NO)(MeCN)(2)(PR(3))] (R=Cy 8 a, iPr 8 b), which showed high catalytic activity toward highly selective dehydrogenative silylation of styrenes (maximum TOF of 61 h(-1)). Single-electron transfer (SET) mechanisms were proposed for all these transformations. The molecular structures of 3 a, 6 a, 6 b, 7 a, 7 b, and 8 a were established by single-crystal X-ray diffraction studies.
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Affiliation(s)
- Yanfeng Jiang
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstrasse 190, 8037 Zürich, Switzerland
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12
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Hydridic reactivity of W(CO)(H)(NO)(PMe3)3 – Dihydrogen bonding and H2 formation with protic donors. J Organomet Chem 2010. [DOI: 10.1016/j.jorganchem.2009.10.036] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Liu L, Bi S, Sun M, Yuan X, Zheng N, Li P. Mechanistic investigation on hydrogenation and hydrosilylation of ethylene catalyzed by rhenium nitrosyl complex. J Organomet Chem 2009. [DOI: 10.1016/j.jorganchem.2009.05.038] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Choualeb A, Maccaroni E, Blacque O, Schmalle HW, Berke H. Rhenium Nitrosyl Complexes for Hydrogenations and Hydrosilylations. Organometallics 2008. [DOI: 10.1021/om7011024] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. Choualeb
- Anorganisch-Chemisches Institut Universität Zürich, Winterthurerstrasse 190, CH-8057, Switzerland
| | - E. Maccaroni
- Anorganisch-Chemisches Institut Universität Zürich, Winterthurerstrasse 190, CH-8057, Switzerland
| | - O. Blacque
- Anorganisch-Chemisches Institut Universität Zürich, Winterthurerstrasse 190, CH-8057, Switzerland
| | - H. W. Schmalle
- Anorganisch-Chemisches Institut Universität Zürich, Winterthurerstrasse 190, CH-8057, Switzerland
| | - H. Berke
- Anorganisch-Chemisches Institut Universität Zürich, Winterthurerstrasse 190, CH-8057, Switzerland
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15
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Chen Z, Schmalle HW, Fox T, Blacque O, Berke H. NH-functionalized tungsten complexes of 2-(dimethylphosphino)imidazole. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2007.06.069] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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Liang F, Schmalle HW, Berke H. μ‐Coordination Chemistry of NO Ligands: Adducts of
trans
‐Mo(dmpe)
2
(Cl)(NO) with Lithium Salts. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200600482] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Fupei Liang
- School of Chemistry and Chemical Engineering, Guangxi Normal University, Guilin 541004, P. R. China
| | - Helmut W. Schmalle
- Anorganisch‐Chemisches Institut der Universität Zürich, Winterthurerstrasse190, 8057 Zürich, Switzerland
| | - Heinz Berke
- Anorganisch‐Chemisches Institut der Universität Zürich, Winterthurerstrasse190, 8057 Zürich, Switzerland
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17
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Zhao Y, Schmalle HW, Fox T, Blacque O, Berke H. Hydride transfer reactivity of tetrakis(trimethylphosphine)(hydrido)(nitrosyl)molybdenum(0). Dalton Trans 2006:73-85. [PMID: 16357963 DOI: 10.1039/b511797f] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The tetrakis(trimethylphosphine) molybdenum nitrosyl hydrido complex trans-Mo(PMe(3))(4)(H)(NO) (2) and the related deuteride complex trans-Mo(PMe(3))(4)(D)(NO) (2a) were prepared from trans-Mo(PMe(3))(4)(Cl)(NO) (1). From (2)H T(1 min) measurements and solid-state (2)H NMR the bond ionicities of 2a could be determined and were found to be 80.0% and 75.3%, respectively, indicating a very polar Mo--D bond. The enhanced hydridicity of 2 is reflected in its very high propensity to undergo hydride transfer reactions. 2 was thus reacted with acetone, acetophenone, and benzophenone to afford the corresponding alkoxide complexes trans-Mo(NO)(PMe(3))(4)(OCHR'R'') (R' = R'' = Me (3); R' = Me, R'' = Ph (4); R' = R'' = Ph (5)). The reaction of 2 with CO(2) led to the formation of the formato-O-complex Mo(NO)(OCHO)(PMe(3))(4) (6). The reaction of with HOSO(2)CF(3) produced the anion coordinated complex Mo(NO)(PMe(3))(4)(OSO(2)CF(3)) (7), and the reaction with [H(Et(2)O)(2)][BAr(F)(4)] with an excess of PMe(3) produced the pentakis(trimethylphosphine) coordinated compound [Mo(NO)(PMe(3))(5)][BAr(F)(4)] (8). Imine insertions into the Mo-H bond of 2 were also accomplished. PhCH[double bond, length as m-dash]NPh (N-benzylideneaniline) and C(10)H(7)CH=NPh (N-1-naphthylideneaniline) afforded the amido compounds Mo(NO)(PMe(3))(4)[NR'(CH(2)R'')] (R' = R'' = Ph (9), R' = Ph, R'' = naphthyl (11)). 9 could not be obtained in pure form, however, its structure was assigned by spectroscopic means. At room temperature 11 reacted further to lose one PMe(3) forming 12 (Mo(NO)PMe(3))(3)[N(Ph)CH(2)C(10)H(6))]) with agostic stabilization. In a subsequent step oxidative addition of the agostic naphthyl C-H bond to the molybdenum centre occurred. Then hydrogen migration took place giving the chelate amine complex Mo(NO)(PMe(3))(3)[NH(Ph)(CH(2)C(10)H(6))] (15). The insertion reaction of 2 with C(10)H(7)N=CHPh led to formation of the agostic compound Mo(NO)(PMe(3))(3)[N(CH(2)Ph)(C(10)H(7))] (10). Based on the knowledge of facile formation of agostic compounds the catalytic hydrogenation of C(10)H(7)N=CHPh and PhN=CHC(10)H(7) with 2 (5 mol%) was tested. The best conversion rates were obtained in the presence of an excess of PMe(3), which were 18.4% and 100% for C(10)H(7)N=CHPh and PhN=CHC(10)H(7), respectively.
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Affiliation(s)
- Yin Zhao
- Department of Inorganic Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich, Switzerland.
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18
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Liu XY, Venkatesan K, Schmalle HW, Berke H. Solvent Stabilization and Hydrogenation Catalysis of Trimethylphosphine-Substituted Carbonyl Rhenium Cations. Organometallics 2004. [DOI: 10.1021/om034196y] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xiang-Yang Liu
- Anorganisch-Chemisches Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Koushik Venkatesan
- Anorganisch-Chemisches Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Helmut W. Schmalle
- Anorganisch-Chemisches Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Heinz Berke
- Anorganisch-Chemisches Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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19
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Liang F, Schmalle HW, Berke H. Insertion Reactions of trans-Mo(dmpe)2(H)(NO) with Imines. Inorg Chem 2004; 43:993-9. [PMID: 14753821 DOI: 10.1021/ic030139l] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The insertion chemistry of the hydride complex trans-Mo(dmpe)(2)(H)(NO) (1) (dmpe = bis(dimethylphosphino)ethane) with imines has been investigated. It was found that disubstituted aromatic imines RCH[double bond]NR' (R, R' = Ar) insert into the Mo-H bond of 1, while a series of various mono- and other disubstituted imines do not react. The insertion products trans-Mo(dmpe)(2)(NO)[NR'(CH(2)R)] (R = R' = Ph (2); R = Cp(2)Fe, R' = Ph (3); R = Ph, R' = Cp(2)Fe (4); R = 1-naphthyl, R' = Ph (5)) have been isolated and fully characterized by elemental analysis, IR and NMR spectroscopy, and mass spectrometry. The imine PhCH[double bond]NC(10)H(7) (C(10)H(7) = 1-naphthyl) reacted with 1 establishing an equilibrium to produce the nonisolable complex trans-Mo(dmpe)(2)(NO)[NC(10)H(7)(CH(2)Ph)] (6). The equilibrium constant for this reaction has been derived from VT-NMR measurements, and the Delta H and Delta S values of this reaction were calculated to be -48.8 +/- 0.4 kJ.mol(-1) and -33 +/- 1 J.K(-1).mol(-1) reflecting a mild exothermic process and its associative nature. Single-crystal X-ray diffraction analyses were carried out on 2-5.
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Affiliation(s)
- Fupei Liang
- Anorganisch-Chemisches Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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Liang F, Schmalle HW, Fox T, Berke H. Hydridic Character and Reactivity of Di[1,2-bis- (dimethylphosphino)ethane]hydridonitrosylmolybdenum(0). Organometallics 2003. [DOI: 10.1021/om021032t] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fupei Liang
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Helmut W. Schmalle
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Thomas Fox
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Heinz Berke
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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21
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22
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Jacobsen H, Berke H. Tuning of the transition metal hydrogen bond: how do trans ligands influence bond strength and hydridicity? ACTA ACUST UNITED AC 2002. [DOI: 10.1039/b111085n] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Field LD, Shaw WJ, Turner P. Addition of Nitrogen-Containing Heteroallenes to Iron(II)-Hydrides. Organometallics 2001. [DOI: 10.1021/om0100030] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Leslie D. Field
- School of Chemistry, University of Sydney, Sydney 2006, New South Wales, Australia
| | - Warren J. Shaw
- School of Chemistry, University of Sydney, Sydney 2006, New South Wales, Australia
| | - Peter Turner
- School of Chemistry, University of Sydney, Sydney 2006, New South Wales, Australia
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24
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Song JS, Szalda DJ, Bullock RM. Alcohol Complexes of Tungsten Prepared by Ionic Hydrogenations of Ketones. Organometallics 2001. [DOI: 10.1021/om010222l] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jeong-Sup Song
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000
| | - David J. Szalda
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000
| | - R. Morris Bullock
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000
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25
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Höck J, Jacobsen H, Schmalle HW, Artus GRJ, Fox T, Amor JI, Bäth F, Berke H. Synthesis and Insertion Behavior of Carbonylhydridonitrosyltris(trimethylphosphine)tungsten(0). Organometallics 2001. [DOI: 10.1021/om000838v] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jürgen Höck
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Heiko Jacobsen
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Helmut W. Schmalle
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Georg R. J. Artus
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Thomas Fox
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - José I. Amor
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Frank Bäth
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Heinz Berke
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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26
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Sarker N, Bruno JW. Thermodynamic Studies of Hydride Transfer for a Series of Niobium and Tantalum Compounds. Organometallics 2000. [DOI: 10.1021/om000682z] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Niladri Sarker
- Department of Chemistry, Wesleyan University, Middletown, Connecticut 06459
| | - Joseph W. Bruno
- Department of Chemistry, Wesleyan University, Middletown, Connecticut 06459
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27
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Bannwart E, Jacobsen H, Furno F, Berke H. Reactivity Patterns of Carbyne Hydride Complexes of Tungsten. Organometallics 2000. [DOI: 10.1021/om000129h] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ewald Bannwart
- Anorganisch-chemisches Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Heiko Jacobsen
- Anorganisch-chemisches Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Franck Furno
- Anorganisch-chemisches Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Heinz Berke
- Anorganisch-chemisches Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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28
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Furno F, Fox T, Schmalle HW, Berke H. 1,2-Bis(dimethylphosphino)ethanehydridomesitylidynetungsten(IV). Hydride Activation via the Trans Influence. Organometallics 2000. [DOI: 10.1021/om000332c] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Franck Furno
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Thomas Fox
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Helmut W. Schmalle
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Heinz Berke
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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29
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Remarkable low symmetry hydrogen bonding network in the structure of ReCl2(NCMe)(NO)(PMe3)2. Inorganica Chim Acta 2000. [DOI: 10.1016/s0020-1693(00)00163-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Baur J, Jacobsen H, Burger P, Artus G, Berke H, Dahlenburg L. The Chemistry of New Nitrosyltungsten Complexes with Pyridyl-Functionalized Phosphane Ligands. Eur J Inorg Chem 2000. [DOI: 10.1002/1099-0682(200007)2000:7<1411::aid-ejic1411>3.0.co;2-m] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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Liang F, Jacobsen H, Schmalle HW, Fox T, Berke H. Carbonylhydridonitrosyltris(trimethylphosphine)molybdenum(0): An Activated Hydride Complex. Organometallics 2000. [DOI: 10.1021/om990945t] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fupei Liang
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Heiko Jacobsen
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Helmut W. Schmalle
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Thomas Fox
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Heinz Berke
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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32
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Brumaghim JL, Priepot JG, Girolami GS. Synthesis of Hydride and Alkyl Compounds Containing the Cp*Os(NO) Fragment. Crystal Structure of [Cp*Os(μ-NO)]2. Organometallics 1999. [DOI: 10.1021/om980657h] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Julia L. Brumaghim
- School of Chemical Sciences, University of Illinois at UrbanaChampaign, 600 South Mathews Avenue, Urbana, Illinois 61801
| | - James G. Priepot
- School of Chemical Sciences, University of Illinois at UrbanaChampaign, 600 South Mathews Avenue, Urbana, Illinois 61801
| | - Gregory S. Girolami
- School of Chemical Sciences, University of Illinois at UrbanaChampaign, 600 South Mathews Avenue, Urbana, Illinois 61801
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33
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Gusev D, Llamazares A, Artus G, Jacobsen H, Berke H. Classical and Nonclassical Nitrosyl Hydride Complexes of Rhenium in Various Oxidation States. Organometallics 1998. [DOI: 10.1021/om980630y] [Citation(s) in RCA: 61] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dimitri Gusev
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Angela Llamazares
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Georg Artus
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Heiko Jacobsen
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
| | - Heinz Berke
- Anorganisch-chemisches Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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34
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Cheng TY, Brunschwig BS, Bullock RM. Hydride Transfer Reactions of Transition Metal Hydrides: Kinetic Hydricity of Metal Carbonyl Hydrides. J Am Chem Soc 1998. [DOI: 10.1021/ja9820036] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tan-Yun Cheng
- Contribution from the Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000
| | - Bruce S. Brunschwig
- Contribution from the Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000
| | - R. Morris Bullock
- Contribution from the Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000
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35
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36
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Shubina ES, Belkova NV, Krylov AN, Vorontsov EV, Epstein LM, Gusev DG, Niedermann M, Berke H. Spectroscopic Evidence for Intermolecular M−H···H−OR Hydrogen Bonding: Interaction of WH(CO)2(NO)L2 Hydrides with Acidic Alcohols. J Am Chem Soc 1996. [DOI: 10.1021/ja953094z] [Citation(s) in RCA: 165] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Elena S. Shubina
- Contribution from the Institute of Ogano-Element Compounds, Russian Academy of Sciences, Vavilov Str. 28, Moscow B-334, Russia, and Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstr. 190 CH-8057 Zurich, Switzerland
| | - Natalia V. Belkova
- Contribution from the Institute of Ogano-Element Compounds, Russian Academy of Sciences, Vavilov Str. 28, Moscow B-334, Russia, and Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstr. 190 CH-8057 Zurich, Switzerland
| | - Aleksandr N. Krylov
- Contribution from the Institute of Ogano-Element Compounds, Russian Academy of Sciences, Vavilov Str. 28, Moscow B-334, Russia, and Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstr. 190 CH-8057 Zurich, Switzerland
| | - Evgeni V. Vorontsov
- Contribution from the Institute of Ogano-Element Compounds, Russian Academy of Sciences, Vavilov Str. 28, Moscow B-334, Russia, and Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstr. 190 CH-8057 Zurich, Switzerland
| | - Lina M. Epstein
- Contribution from the Institute of Ogano-Element Compounds, Russian Academy of Sciences, Vavilov Str. 28, Moscow B-334, Russia, and Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstr. 190 CH-8057 Zurich, Switzerland
| | - Dmitri G. Gusev
- Contribution from the Institute of Ogano-Element Compounds, Russian Academy of Sciences, Vavilov Str. 28, Moscow B-334, Russia, and Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstr. 190 CH-8057 Zurich, Switzerland
| | - Martina Niedermann
- Contribution from the Institute of Ogano-Element Compounds, Russian Academy of Sciences, Vavilov Str. 28, Moscow B-334, Russia, and Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstr. 190 CH-8057 Zurich, Switzerland
| | - Heinz Berke
- Contribution from the Institute of Ogano-Element Compounds, Russian Academy of Sciences, Vavilov Str. 28, Moscow B-334, Russia, and Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstr. 190 CH-8057 Zurich, Switzerland
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