Vaska-type complexes such as MCl(CO)L2 (M = Rh or Ir, L = tertiary phosphine) or the Wilkinson complex RhCl(PPh3)3 underwent halogen exchange reactions with halosilanes Me3SiX (X = Br, I) to give MX(CO)L2 or RhX(PPh3)3 respectively with the formation of Me3SiCl. The reaction of RhH(CO)(PPh3)3 with MeSiCl3 also afforded RhCl(CO)(PPh3)2.
Photocatalytic dehydrogenation of 2-propanol with carbonyl(halogeno)phosphine-rhodium complexes
作者:Kotohiro Nomura、Yasukazu Saito、Sumio Shinoda
DOI:10.1016/0304-5102(89)80084-7
日期:1989.6
Photocatalytic dehydrogenation of 2-propanol, yielding acetone and dihydrogen, proceeded at high turnover frequencies with carbonyl(halogeno) phosphine-rhodium complexes RhX(CO)(PR3)2 (X = halogen and PR3 = t-phosphine) under excitation conditions for the metal-to-ligand charge transfer. The three-coordinate species RhX(PR3)2 generated by photodissociation of the CO ligand was responsible for the catalytic cycle
Activation of H2 by halogenocarbonylbis(phosphine)rhodium(I) complexes. The use of parahydrogen induced polarisation to detect species present at low concentration
作者:Paul D. Morran、Simon B. Duckett、Peter R. Howe、John E. McGrady、Simon A. Colebrooke、Richard Eisenberg、Martin G. Partridge、Joost A. B. Lohman
DOI:10.1039/a905109k
日期:——
observed. When RhX(CO)(PMe3)2 [X = Cl or Br] is warmed with p-H2 the complex (PMe3)2(X)HRh(µ-H)(µ-X)Rh(CO)(PMe3) [X = Cl or Br] is detected which contains a bridging hydride trans to the rhodium(I) PMe3 ligand. However, when X = I, the situation is far more complex, with (PMe3)2H2Rh(µ-I)2Rh(CO)(PMe3) observed preferentially at low temperatures and (PMe3)2(I)HRh(µ-H)(µ-I)Rh(CO)(PMe3) at higher temperatures