Paramagnetic bis(carboxylato)(p-tolyl isocyanide)triphenylarsineiridium(II) complexes: preparation and characterisation by spectroscopic and magnetic measurements

Abstract

The reaction of [IrH₃(AsPh₃)₂(CNC₆H₄Me-p)] with carboxylic acids yields the new paramagnetic iridium(II) complexes [Ir(AsPh₃)(CNC₆H₄Me-p)(O₂CR)₂][R = Me, p-ClC₆H₄, p-MeOC₆H₄, 2,4,6-Me₃C₆H₂; RCO₂= pentane-2,4-dionate (pd)]. Their characterisation has been carried out by spectroscopic and magnetic measurements. The structure of the complexes and the ground-state electronic configuration of Ir^II therein is discussed.