927890-24-2Relevant articles and documents
Ruthenium(II) complexes containing bis(2-(diphenylphosphino)phenyl) ether and their catalytic activity in hydrogenation reactions
Venkateswaran, Ramalingam,Mague, Joel T.,Balakrishna, Maravanji S.
, p. 809 - 817 (2008/10/09)
The half-sandwich complexes [(η5-C5H 5)RuCl(DPEphos)] (1) and [{(η6-p-cymene)RuCl 2}2(μ-DPEphos)] (2) were synthesized by the reaction of bis(2-(diphenylphosphino)phenyl) ether (DPEphos) with a mixture of ruthenium trichloride trihydrate and cyclopentadiene and with [(η6-p- cymene)RuCl2]2, respectively. Treatment of DPEphos with cis-[RuCl2-(dmso)4] afforded fac-[RuCl2(κ 3-P,O,P-DPEphos)(dmso)] (3). The dmso ligand in 3 can be substituted by pyridine, 2,2′-bipyridine, 4,4′-bipyridine, and PPh3 to yield trans,cis-[RuCl2(DPEphos)(C5H5N) 2] (4), cis,cis-[RuCl2(DPEphos)-(2,2′-bipyridine)] (5), trans,cis-[RuCl2(DPEphos)(μ-4,4′-bipyridine)] n (6), and mer,trans-[RuCl2(κ3-P,P,O- DPEphos)-(PPh3)] (7), respectively. Refluxing [(η6-p- cymene)RuCl2]2 with DPEphos in moist acetonitrile leads to the elimination of the p-cymene group and the formation of the octahedral complex cis,cis-[RuCl2(DPEphos)(H2O)(CH3CN)] (8). The structures of the complexes 1-5, 7, and 8 are confirmed by X-ray crystallography. The catalytic activity of these complexes for the hydrogenation of styrene is studied.
