Mixed-ligand Complexes of Ruthenium(II) and Iridium(III) with Triphenylphosphine and Thiocarbohydrazide

Abstract

The ligand substitution reactions in precursor complexes [Ru(P_ϕ3)₄Cl₂], [RuH(CO)(P_ϕ3)₃Cl] and [Ir(CO)(P_ϕ3)₂Cl] are reported using thiocaorbohydrazide as ligand. The solid products isolated after ligand displacement reaction in [Ir(CO)(P_ϕ3)₂Cl] are further undergo oxidativeaddition easily with ethanolic HCl leading to the formation of other iridium(III) complexes. All complexes are characterized by elemental analysis, IR, UV-VIS, ¹H NMR, molar cunductivity and magnetic susceptibility data. Probable octahedral structure of ruthenium(II) and iridum(III) complexes are reasonably assigned.