Chemical Evolution in Solutions of Ir Complex [H(dmso) 2 ] 2 [IrCl 6 ]. Structures of [H(dmso) 2 ] 2 [IrCl 6 ], [H(dmso)][IrCl 4 (dmso) 2 ], [Me 2 SCH 2 C(O)Me][IrCl 4 (dmso) 2 ], [Me 2 SCH 2 C(O)Me] 2 [IrCl 6 ] and Its Os Analogue

Abstract

According to our solution reactivity studies, the reactant [H(dmso)2]2[IrCl6] undergoes slow spontaneous reduction of Ir(IV) to Ir(III) in all solvents under study, including water, hydrochloric acid, and acetone. A concurrent reaction is realized in acetone solutions, which effectively gives rise to the incorporation of DMSO into the iridium coordination sphere to afford trans-[IrIIICl4(dmso)2]−. The chemical evolution of [H(dmso)2]2[IrCl6] extends beyond the iridium-centered complex anion.