Mössbauer spectroscopy of iridium compounds. Part I. Some iridium-(III) complexes

Abstract

Mössbauer spectra of 15 complexes of Ir^III have been recorded. Using these data, in addition to those of published work, it has been found that partial isomer-shift and partial quadrupole-splitting treatments are not very satisfactory for these complexes. One of the reasons is because the localised bonding that is the basis of such a treatment is less true for Ir^III than for Fe^II complexes. The interaction of one ligand bond with the others is also supported by n.m.r. data on complexes of ligands with phosphorus-donor atoms.