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

被引：39

作者：

JOSHI, AM ^{[1
]}

MACFARLANE, KS ^{[1
]}

JAMES, BR ^{[1
]}

机构：

[1] UNIV BRITISH COLUMBIA,DEPT CHEM,VANCOUVER,BC V6T 1Z1,CANADA

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1995年 / 488卷 / 1-2期

基金：

加拿大自然科学与工程研究理事会;

关键词：

HYDROGENATION; STYRENE; RUTHENIUM; CATALYSIS; DIHYDROGEN; KINETICS;

D O I：

10.1016/0022-328X(94)00016-6

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

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.

引用

页码：161 / 167

页数：7

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