Synthesis and characterization of some arene hydrido-complexes [Ru(eta(6)-arene)(EPh3)(2)H](+) (eta(6)-arene = benzene, p-cymene or hexamethylbenzene; E = P, As or Sb). Crystal structure of [Ru(eta(6)-C6H6)(PPh3)(2)H]BF4

摘要

{Ru(eta(6)-arene)Cl-2}(2)] (eta(6)-arene = benzene, p-cymene or hexamethylbenzene) reacts with EPh3 (E = P, As or Sb) in methanol to give monomeric cationic arene hydride complexes [Ru(eta(6)-arene)(EPh3)(2)H](+) in presence of AgBF4 or AgPF6. However, reactions in presence of triphenylphosphine also yield a symmetrically bridged tris (mu-methoxy) complex [(PPh3)(3)Ru(mu-OMe)(3)Ru(PPh3)(3)](+). The crystal structure of [Ru(eta(6)-C6H6)(PPh3)(2)H]BF4 has been determined. Crystal data, monolinic system, space group P2(1), a = 14.792 (2) Angstrom; b = 14.351 (1) Angstrom; c = 17.661 (2) Angstrom; beta = 102.25 (1)degrees and Z = 4. Crystal structure determination reveals the distortion of the Ru(PPh3)(2)H+ unit in the cation [Ru(eta(6)-C6H6)(PPh3)(2)H](+). (C) 1998 Elsevier Science S.A. All rights reserved. [References: 31