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Volumn 30, Issue 3, 2011, Pages 422-432

Insight into the mechanism of R-R reductive elimination from the six-coordinate d6 complexes L2Pt(R)4 (R = vinyl, Me)

Author keywords

[No Author keywords available]

Indexed keywords

COORDINATE COMPLEXES; ELECTRON-ACCEPTING; ELECTRON-DONATING; PRE-DISSOCIATION; REDUCTIVE ELIMINATION; SIX-COORDINATE COMPLEX;

EID: 79751515020     PISSN: 02767333     EISSN: 15206041     Source Type: Journal    
DOI: 10.1021/om1005512     Document Type: Article
Times cited : (29)

References (97)
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    • Negishi, E. Palladium-Catalyzed Reactions Involving Reductive Elimination. In Handbook of Organopalladium Chemistry for Organic Synthesis; Negishi, E., Ed.; Wiley-Interscience: New York, 2002; Vol. I, p 213.
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  • 4
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    • For theoretical investigations see
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    • For experimental investigations see:, and references therein
    • For experimental investigations see: Hartwig, J. F. Inorg. Chem. 2007, 46, 1936, and references therein
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    • Hartwig, J.F.1
  • 14
  • 52
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    • See page 172 of ref 1b.
    • See page 172 of ref 1b.
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    • Frisch, M. J.; et al. Gaussian 09, revision A.02; Gaussian, Inc.: Pittsburgh, PA, 2009.
    • Frisch, M. J.; et al. Gaussian 09, revision A.02; Gaussian, Inc.: Pittsburgh, PA, 2009.
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    • 66249122361 scopus 로고    scopus 로고
    • Metal-phosphine bond energies are underestimated by the B3LYP calculations
    • Metal-phosphine bond energies are underestimated by the B3LYP calculations: Sieffert, N.; Bühl, M. Inorg. Chem. 2009, 48, 4622
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    • Sieffert, N.1    Bühl, M.2
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    • 79751509653 scopus 로고    scopus 로고
    • 4 complex is much less reactive toward reductive elimination than the cis complex. Further details are provided in the Supporting Information.
    • 4 complex is much less reactive toward reductive elimination than the cis complex. Further details are provided in the Supporting Information.
  • 74
    • 79751471717 scopus 로고    scopus 로고
    • Our calculations show that the inclusion of a molecule of the coordinating solvent acetonitrile does not affect the reductive elimination barriers predicted in Figures 1 and 2 (see the Supporting Information for detail; Figures S4 and S5).
    • Our calculations show that the inclusion of a molecule of the coordinating solvent acetonitrile does not affect the reductive elimination barriers predicted in Figures 1 and 2 (see the Supporting Information for detail; Figures S4 and S5).
  • 75
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    • 298 = 11.4 kcal/mol (see Figures 1 and S6). The energy difference between the δ H and δ G values (17.2 kcal/mol) is greater than the one suggested by Ziegler (8-12 kcal/mol) (see refs 27b, 27c, 27f), indicating an incorrect estimate of δ G from the gas phase calculation. A precise estimate of δ G in solution is too difficult to calculate.
    • 298 = 11.4 kcal/mol (see Figures 1 and S6). The energy difference between the δ H and δ G values (17.2 kcal/mol) is greater than the one suggested by Ziegler (8-12 kcal/mol) (see refs 27b, 27c, 27f), indicating an incorrect estimate of δ G from the gas phase calculation. A precise estimate of δ G in solution is too difficult to calculate. Braga, A. A. C.; Ujaque, G.; Maseras, F. Organometallics 2006, 25, 3647
    • (2006) Organometallics , vol.25 , pp. 3647
    • Braga, A.A.C.1    Ujaque, G.2    Maseras, F.3
  • 83
    • 79751513491 scopus 로고    scopus 로고
    • Our IRC calculation showed that the Y-type distorted trigonal-bipyramidal structure is not a local minimum for the vinyl system.
    • Our IRC calculation showed that the Y-type distorted trigonal-bipyramidal structure is not a local minimum for the vinyl system.
  • 85
    • 0037041527 scopus 로고    scopus 로고
    • The entropic terms for experimental activation energies of Pt(IV)-L dissociation processes have been shown to vary from positive to negative values depending on the leaving group ligands and conditions.
    • The entropic terms for experimental activation energies of Pt(IV)-L dissociation processes have been shown to vary from positive to negative values depending on the leaving group ligands and conditions. Bernhardt, P. V.; Gallego, C.; Martinez, M.; Parella, T. Inorg. Chem. 2002, 41, 1747
    • (2002) Inorg. Chem. , vol.41 , pp. 1747
    • Bernhardt, P.V.1    Gallego, C.2    Martinez, M.3    Parella, T.4
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    • 3 ligand.
    • 3 ligand.
  • 97
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    • 3 has clearly the L dissociation prior to the reductive elimination whereby entropic considerations assist the reductive process
    • 3 has clearly the L dissociation prior to the reductive elimination whereby entropic considerations assist the reductive process.


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