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Volumn 14, Issue 1, 2008, Pages 296-310

Non-innocent behaviour of imido ligands in the reactions of silanes with half-sandwich imido complexes of Nb and V: A silane/imido coupling route to compounds with nonclassical Si-H interactions

Author keywords

Agostic; Bonding group 5; Hydrides; Imido; Silicon

Indexed keywords

ACTIVATION ENERGY; COMPLEXATION; NITROGEN; REACTION KINETICS; SILANES; THERMODYNAMICS;

EID: 38049155480     PISSN: 09476539     EISSN: 15213765     Source Type: Journal    
DOI: 10.1002/chem.200700271     Document Type: Article
Times cited : (30)

References (135)
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    • Only a few examples of silane additions to an imido group are known: a) U. Burckhardt, G. L. Casty, T. D. Tilley, T. W. Woo, U. Rothlisberger, Organometallics 2000, 19, 3830;
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    • For related silane addition to a bridging nitrido ligand see;
    • c) For related silane addition to a bridging nitrido ligand see;
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    • G. I. Nikonov, L. G. Kuzmina, J. A. K.; Howard, J. Chem. Soc. Dalton Trans. 2002, 3037;
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    • 0 silylamido agostic complexes are known: a) W. A. Herrmann, N. W. Huberand, J. Behm, Chem. Ber. 1992, 125, 1405;
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    • Recent reviews on nonclassical Si-H interactions: a G. J. Kubas, Metal Dihydrogen and σ-Bond Complexes Kluwer Academic/ Plenum: New York 2001;
    • Recent reviews on nonclassical Si-H interactions: a) G. J. Kubas, "Metal Dihydrogen and σ-Bond Complexes" Kluwer Academic/ Plenum: New York 2001;
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    • Other transition metal imido silyl complexes are known: a U. Burckhardt, T. D. Tilley, J. Am. Chem. Soc. 1999, 121, 6328;
    • Other transition metal imido silyl complexes are known: a) U. Burckhardt, T. D. Tilley, J. Am. Chem. Soc. 1999, 121, 6328;
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    • More in-depth discussion of the spectroscopic features of agostic complexes is added to Supporting Information
    • More in-depth discussion of the spectroscopic features of agostic complexes is added to Supporting Information.
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    • 2Nb(=NtBu)H the poorly observable hydride resonates at 3.17 ppm: A. N. Chernega, M. L. H. Green A. G. Suarez, J. Chem. Soc., Dalton Trans. 1993, 3031;
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    • 0 Hydride imido complex of Ta exhibits hydride resonance at 15.28 ppm: ref 3a.
    • 0 Hydride imido complex of Ta exhibits hydride resonance at 15.28 ppm: ref 3a.
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    • 96Nb: a) J. A. Labinger, in Comprehensive Organometallic Chemistry, 3, R. W. Able, G. Wilkinson, F. G. A. Stone. Eds.; Pergamon, 1983;
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    • In 3 this effect is increased relatively 2 because both the silyl and hydride ligands interact stronger with the metal through 2c-2e bonds
    • c) In 3 this effect is increased relatively 2 because both the silyl and hydride ligands interact stronger with the metal through 2c-2e bonds.
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    • IHI consists of electron density transfer from the electron-rich metal-hydride bond on the antibonding σ*(Si-X) orbital of the trans Si-X bond, leading to the elongation of M-H bond, the contraction of M-Si bond, and the elongation of Si-X bond refs, 14-16, 18, 28
    • IHI consists of electron density transfer from the electron-rich metal-hydride bond on the antibonding σ*(Si-X) orbital of the trans Si-X bond, leading to the elongation of M-H bond, the contraction of M-Si bond, and the elongation of Si-X bond (refs. [14-16, 18, 28]).
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    • 2H is classical but has short Nb-Si bonds (2.5597(5) and 2.5776(5) Å), owing to the presence of three electron-withdrawing chlorine groups at Si (ref. [26]).
    • 2H is classical but has short Nb-Si bonds (2.5597(5) and 2.5776(5) Å), owing to the presence of three electron-withdrawing chlorine groups at Si (ref. [26]).
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    • The connectivity of this complex has been established but the over-all accuracy of this structure was low due to the poor quality of the crystal ref, 18
    • The connectivity of this complex has been established but the over-all accuracy of this structure was low due to the poor quality of the crystal (ref. [18]).
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    • See the Supporting Information for details
    • See the Supporting Information for details.
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    • 22-19 to complex 19.
    • 22-19 to complex 19.
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    • For a recent example of such X→M stabilization see
    • For a recent example of such X→M stabilization see: H. Zhao, A. Ariafard, Z. Lin, Organometallics 2006, 25, 812.
    • (2006) Organometallics , vol.25 , pp. 812
    • Zhao, H.1    Ariafard, A.2    Lin, Z.3
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    • Silane σ-bond metathesis reactions on imido complexes have been intensively studied by Tilley and co-workers: ref, 3a,b,d,e-g
    • Silane σ-bond metathesis reactions on imido complexes have been intensively studied by Tilley and co-workers: ref. [3a,b,d,e-g].
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    • SHELXTL-Plus, Release 5.10, Bruker AXS Inc, Madison, Wisconsin USA, 1997;
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    • for complex 3e the program CRYSTALS has been used for structural refinement: D. J. Watkin, C. K. Prout, J. R. Carruthers, P. W. Betteridge, R. I. Cooper, CRYSTALS, issue 11, Chemical Crystallography Laboratory: Oxford, UK, 2001.
    • b) for complex 3e the program CRYSTALS has been used for structural refinement: D. J. Watkin, C. K. Prout, J. R. Carruthers, P. W. Betteridge, R. I. Cooper, CRYSTALS, issue 11, Chemical Crystallography Laboratory: Oxford, UK, 2001.
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    • Note added in proof: The following recent paper on IHI is pertinent to this publication; H. Sakaba, T. Hirata, C. Kabuto, K. Kabuto, J. Organomet. Chem. 2007, 692, 402.
    • Note added in proof: The following recent paper on IHI is pertinent to this publication; H. Sakaba, T. Hirata, C. Kabuto, K. Kabuto, J. Organomet. Chem. 2007, 692, 402.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.