Redox-active organometallic Ir complexes containing biphenyl-2,2′-diyl

Abstract

The redox-active complexes [Ir(PPh3)2(biph)Cl]3 and [Ir(PMe3)3(biph)Cl]6 contain biphenyl-2,2-diyl (biph), the organometallic analogue of bipy; 3 shows an unexpected five-coordinate structure lying between T and Y geometry and oxidation of 6 by NOBF4 gives [Ir(PMe3)3(biphBF)Cl]+(8)+, an unprecedented IrIV boryl complex.