ELECTROCHEMICAL SYNTHESIS AND CHARACTERIZATION OF GALLIUM, INDIUM ANDTHALLIUM COMPOUNDS WITH 1-HYDROXOPYRIDINE-2-THIONE - THE CRYSTAL-STRUCTURES OF TRIS(1-OXOPYRIDINE-2-THIONATO)INDIUM(III) AND TRIS(1-OXOPYRIDINE-2-THIONATO)THALLIUM(III)

The electrochemical oxidation of anodic metals, gallium, indium or tha llium, in an acetonitrile solution of 1-hydroxopyridine-2-thione (HPT) affords [Ga(PT)(3)], [In(PT)(3)], [Tl(PT)(3)] and [Tl(PT)]. The cryst al structures of [In(PT)(3)] and [Tl(PT)(3)] were determined by X-ray diffraction. The compounds consist of monomeric molecules in which the central MO3S3 units (M =In, Tl) have distorted octahedral environment s. IR, H-1 and C-13 NMR spectra of the complexes are discussed and rel ated to the structure. Tl-205 NMR spectra of thallium complexes are al so presented. (C) 1998 Elsevier Science S.A. All rights reserved.