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Volumn 132, Issue 34, 2010, Pages 12013-12026

Fluxionality of [(Ph3P)3M(X)] (M = Rh, Ir). the red and orange forms of [(Ph3P)3Ir(Cl)]. Which phosphine dissociates faster from wilkinson's catalyst?

Author keywords

[No Author keywords available]

Indexed keywords

ACTIVATION PARAMETER; COMPUTATIONAL STUDIES; DISSOCIATIVE MECHANISMS; ELECTRON DONATION; EXCHANGE PROCESS; FLUXIONALITY; INTERMOLECULAR EXCHANGE; INTRAMOLECULAR EXCHANGE; ISOSTRUCTURAL; NMR STUDIES; SPIN CROSSOVERS; TRANS INFLUENCE; TRANSITION STATE; WILKINSON'S CATALYST;

EID: 77956093214     PISSN: 00027863     EISSN: 15205126     Source Type: Journal    
DOI: 10.1021/ja1039693     Document Type: Article
Times cited : (49)

References (122)
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    • (a) A reviewer proposed a negative hyperconjugation (60b, 60c) structure as an alternative to the one shown in Scheme 3 to account for a low barrier pathway to the α-F-elimination (eq 1) and for the positive charge on C (Scheme 2) in 3. Although such a negative hyperconjugation resonance structure may contribute to the overall system, it would not account for the strong negative charge on Rh (Table 9 and Scheme 1), because heterolysis of the C-F bond implies a removal of electron density from that site. The resonance forms implied in Scheme 3 would therefore appear to dominate in this case. For an early discussion of negative hyperconjugation in benzotrifluorides, see: Roberts, J. D., Webb, R. L., and McElhill, E. A. J. Am. Chem. Soc. 1950, 72, 408
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    • 3Rh(Cl)]. (63b) It is also worth emphasizing that in the NMR spectra we did not observe any unusual signs that would point to an influence of the electron spin in the triplet intermediate on the NMR experiments. For a review of the spin crossover phenomenon under magnetic field, see: Bousseksou, A., Varret, F., Goiran, M., Boukheddaden, K., and Tuchagues, J.-P. Top. Curr. Chem. 2004, 235, 65
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    • The method is similar to the one described in
    • The method is similar to the one described in
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