Hydrido-complexes of transition metals. Part II. Hydrido-complexes of rhodium(III) with tertiary phosphines

Abstract

The products of the reaction between rhodium trihalides and tertiary phosphines of varying basicity have been investigated. According to the nature of the solvent and/or the particular phosphine, hydrido-complexes of rhodium(III)[RhHX₂L₃](X = Cl, Br, I; L = PPh₃, PEtPh₂, PEt₂Ph), complexes of rhodium(I)[RhCIL₃](L = PPh₃, PEtPh₂), and a trichloro-complex of formula RhCl₃(PEt₂Ph)₃ were obtained. From the hydrido-derivatives, complexes with a rhodium–mercury bond [Rh(HgX)X₂(PEtPh₂)₃], carbonyl complexes [RhX(CO)(PEtPh₂)₂], and a diamagnetic binuclear complex of formula [Rh₂Cl₄(PEtPh₂)₄] were obtained. From the chloro-complexes of rhodium(I), cis-dihydrido-complexes of rhodium(III)[RhH₂CIL₃] were obtained.