Title | KINETICS AND MECHANISM OF H-2-HYDROGENATION OF STYRENE CATALYZED BY [RUCL(DPPB)(MU-CL)](2) (DPPB=1,4-BIS(DIPHENYLPHOSPHINO)BUTANE) - EVIDENCE FOR HYDROGEN-TRANSFER FROM A DINUCLEAR MOLECULAR-HYDROGEN SPECIES |
Publication Type | Journal Article |
Year of Publication | 1995 |
Authors | Joshi, AM, Macfarlane, KS, James, BR |
Journal | Journal of Organometallic Chemistry |
Volume | 488 |
Pagination | 161-167 |
Date Published | Feb |
Type of Article | Article |
ISBN Number | 0022-328X |
Keywords | ASYMMETRIC HYDROGENATION, BINAP, CATALYSIS, COMPLEXES, DIHYDROGEN, dihydrogen complexes, HYDROGENATION, KINETICS, LIGANDS, phosphine, ruthenium, RUTHENIUM(II) COMPLEXES, SELECTIVE, STYRENE, UNSATURATED CARBOXYLIC-ACIDS |
Abstract | Kinetic studies on the H-2-hydrogenation of styrene catalyzed by [RuCl(dppb)(mu-Cl)](2) (dppb = Ph(2)P(CH2)(4)PPh(2)) in N,N-dimethylacetamide solution, near ambient conditions have revealed a first-order dependence on Ru, and dependences on H-2 and on styrene that are first-order at lower concentrations and decrease with increasing concentration. Considered along with NMR and tensiometric data, the findings are interpreted in terms of a basic hydride route in which an initially formed, dinuclear, molecular hydrogen complex (eta(2)-H-2)Ru(dppb)(mu-Cl)(3)RuCl(dppb) transfers both hydrogens to the styrene. |
URL | <Go to ISI>://A1995QG25400022 |
