Preparation and characterisation of some hexa-coordinate complexes of chromium(III) chloride with sulphur (thiourea), nitrogen (heterocyclic amines) and diarsine (phenyl arsonic acid) containing ligands

The thermal behaviour of some mixed-ligand complexes of Cu(I) and Ag(I) formed by the interaction of Cu(tu)3I and Ag(tu)I (where tu stands for thiourea) with py, 2-pic, 3-pic, 4-pic, qu, iqu, pip, ac, bpy and phen have been studied using TGA and DTA techniques. IR spectral and X-ray diffraction analyses have been employed to identify the nature of the dissociation products. The Cu (I) complexes lose thiourea in the first step and then the heterocyclic amine whereas in case of the Ag(I) complexes, the thiourea molecule leaves only after the removal of the heterocyclic amine from the complex. The thermal behaviour of the complexes shows that Cu (I) is more tenaciously bonded with nitrogen donors whereas Ag(I) has more affinity towards sulphur containing ligands. aPart I, S. Sabir, K. Iftikhar and A. U. Malik, Synth. React. Inorg. Met.-Org. Chem., submitted. bPresent address: SWCC Research Development Centre, P.O. Box 8160, Al-Jubail 31951, Saudia Arabia. Referee I: M. E. Wright Referee II: M. R. Ma...

M.N. Khan

Papers

Mixed ligand complexes of copper(I)—IV Interaction of tris(thiourea) copper(I) iodide with o-phenanthroline