Mossbauer spectroscopy of iridium compounds. Part II. Some iridium(I) complexes

Abstract

Mossbauer spectra of 13 four-co-ordinate, formally Ir^I, species are reported. The comparatively small differences in the electronic environments of the iridium nuclei in these complexes are attributed to the interaction between the metal-ligand bonds in these molecules leading to compensation effects. This interpretation of the data is confirmed by changes in the ³¹P n.m.r. parameters of the phosphine ligands and of (CO) in the carbonyl ligand.