Chan, Vincent S.; Chiu, Melanie; Bergman, Robert G., Journal of the American Chemical Society, 2009, vol. 131, p. 6021 - 6032
作者:Chan, Vincent S.、Chiu, Melanie、Bergman, Robert G.、Toste, F. Dean
DOI:——
日期:——
Study of the Bonding Properties of the New Ligands C<sub>5</sub>H<sub>3</sub>N(2-R‘)(6-CH<sub>2</sub>PPhR) toward Rhodium(I). Evidence for a Dynamic Competition for Bonding between O- and N-Donor Centers When R = <i>o</i>-Anisyl, R‘ = Me
作者:Hong Yang、Noël Lugan、René Mathieu
DOI:10.1021/om960982+
日期:1997.5.1
The bonding properties of the optically active chiral-at-P polydentate ligands C5H3N(2-R')(6-CH2PPhR) (R = Me, R' = H, Me; R o-anisyl, R' = H, Me) and the achiral ligand C5H3N(2-Me)(6-CH2PPh2) toward (COD)Rh+ are reported. The results show that steric hindrance of the 2-position of the pyridyl ring induces a labile character of the Rh-N bond. Moreover, for R = o-anisyl and R' = Me, a dynamic competition for bonding between the N-and O-donating centers is observed. Comparison of the solid state structures of complexes [Rh(COD)(C5H4N(2-CH2PPhMe)][BF4] and [Rh(COD)(C5H3N(2-Me)(6-CH2PPh2)][BF4] shows a significant bond lengthening of the Rh-N bond in the latter complex, consistent with its fluxional behavior observed in solution.
Yang, Hong; Lugan, Noel; Mathieu, Rene, Anales de Quimica, <hi>1997</hi>, vol. 93, # 1, p. 28 - 38