PREPARATION AND PROPERTIES OF C8H4S8-PLATINUM(II) COMPLEXES AND ELECTRICAL CONDUCTIVITIES OF THEIR OXIDIZED SPECIES AND X-RAY CRYSTAL-STRUCTURE OF C8H4S8(CH2CH2CN)(2) AS A PRO-LIGAND COMPOUND

Using the C8H4S82- ligand hiole-2-ylidiene}-1,3-dithiole-4,5-dithionat e(2-)] as an extended pi-electron system, [NBu4n](2) [Pt(C8H4S8)(2)] a nd Pt(Et2S)(2)(C8H4S8) were prepared. They were oxidized by the ferroc enium, the decamethylferrocenium cation or iodine to form [NBu4n](x)[P t(C8H4S8)(2)] (x = 0.05-0.4) and Pt(C8H4S8) (Et2S)(0.3)I-1.8, which ex hibited electrical conductivities of 1.1-6.9 S cm(-1), measured for co mpacted pellets at room temperature. The crystal structure of the pro- ligand compound, C8H4S8(CH2CH2CN)(2), revealed a one-dimensional array of dimerized molecules constructed with some sulfur-sulfur non-bonded contacts. (C) 1998 Published by Elsevier Science S.A. All rights rese rved.