Co-ordination chemistry of indium. Part VI. Far-infrared spectra of indium trihalide adducts with neutral donors

Abstract

Infrared spectra have been obtained over the range 70–4000 cm.^–1 for complexes of the types InX₃L₃ and InX₃L₂, where X = Cl, Br, and I and L = donor ligand. The evidence indicates a pentaco-ordinate monomeric structure for the InX₃L₂ series [L = Ph₃PO, Ph₃P, or ½(Ph₂P·C₂H₄·PPh₂)] in the solid state, the trans-octahedral form for InX₃(dimethyl sulphoxide)₃, and the cis-octahedral structure for InX₃py₃.