An iridium complex with an unsupported Ir - Zn bond: diiodido(η5-pentamethylcyclopentadienyl)bis(trimethylphosphane)iridiumzinc(Ir - Zn) benzene hemisolvate

Abstract

The title compound, [IrZnI2(C10H15)(C3H9P)2]·0.5C6H6 or [Cp∗(PMe3)2Ir]-[ZnI2] (Cp∗= cyclo-C5Me5) was obtained and characterized as its benzene solvate [Cp∗(PMe3)2Ir]-[ZnI2]·0.5C6H6. The bimetallic complex in this structure contains the Lewis-acidic fragment ZnI2 bonded to the Lewis-basic fragment Cp∗(PMe3)2Ir, with an Ir - Zn bond distance of 2.452(1)Å. The compound was obtained by reacting [Cp∗(PMe3)IrI2] with 2-Ad2Zn (2-Ad = 2-adamantyl), resulting in the reduction of the IrIII complex and formation of the IrI-ZnII adduct. The crystal studied was a twin by non-merohedry with a refined BASF parameter of 0.223(1).