Synthesis and crystal structure of the mixed iridium(III) and copper(II) complex, [IrCl(PPh3)2(µ-dppn)(µ-NO)CuCl][PF6]2, [dppn = 3,6-bis(2′-pyridyl)pyridazine], with a nitrosyl group bridging two different metals

Abstract

The mixed Ir–Cu complex, [IrCl(PPh₃)₂(dppn)(NO)CuCl][PF₆]₂, [dppn = 3,6-bis(2′-pyridyl)pyridazine], has been synthesised starting from [Ir(NO)(dppn)₃(PPh₃)₂][PF₆]₂, a complex with a linearly bound nitrosyl group; X-ray structural analysis has shown that both dppn and nitrosyl ligands bridge the metal atom and this is the first example of a nitrosyl group bridging two different metals.