Reactions of ruthenium triphenylphosphine complexes with diazadienes. Part 1. Reactions of [RuCl2(PPh3)3] and [RuH(Cl)(PPh3)3] and disproportionation of a hydridochloro-complex

Abstract

The reactions between [RuCl₂(PPh₃)₃] and half or one equivalent of a diazadiene (dad) give respectively molecular and ionic binuclear triply chloro-bridged complexes, [Ru₂Cl₄(PPh₃)₃(dad)] and [Ru₂Cl₃(PPh₃)₂(dad)₂]Cl which can also be obtained as its B Ph₄ salt. The compound [RuH(Cl)(PPh₃)₃] reacts with diazadienes to produce [RuH(Cl)(PPh₃)₂(dad)], which disproportionates in polar solvents to give a hydrido- and a dichloro-compound and reacts with water to give a chlorodihydroxo-bridged hydrido-species, [Ru₂H(µ-OH)₂(PPh₃)₃(dad)].