Binap as an 8e arene-mono-phosphine donor to Ru(II)
摘要:
The reaction of the cationic hydride complex [RuH(eta(6)-benzene)(Binap)]CF3SO3 with PPh3 at 80 degreesC afforded complex 4 in excellent yield. The reaction with tri(p-tolyl) phosphine afforded an analogous compound, 5. After loss of the complexed benzene, the Ru-cation generated chooses to stabilize itself by coordinating the proximate naphthyl ring at the expense of one of the two phosphorus donors. The solid-state structure of 4 is reported and reveals that the eta(6) arene is strongly distorted towards a eta(4)-mode. (C) 2003 Elsevier B.V. All rights reserved.
A Facile Synthesis of a Wide Variety of Cationic Ruthenium Hydrido-Arene Complexes of binap (=1,1′-Binaphthalene-2,2′-diylbis(diphenylphosphane)) and MeObiphep (=6,6′-Dimethoxybiphenyl-2,2′-diylbis(diphenylphosphane))
摘要:
A straightforward high-yield synthetic route to the cationic hydrido-arene complexes [RuH(eta(6)-arene)(binap or MeO-biphep)](CF3SO3), with a variety of arenes containing both donor and acceptor substituents, is described. C-13-NMR Data for these complexes are reported. Several of these Ru-complexes have been used as transfer-hydrogenation catalysts in the reduction of acetophenone.