摘要:
                                Pt(C3Se5)(L) [C3Se5(2-) = 4,5-di(hydroseleno)-1,3-diselenole-2-selenate; L = N-alkyl-2-methylpyridine-2-carbaldimine (alkyl = ethyl and i-propyl) and 2,2'-bipyridine] have been prepared. They are polarized, exhibiting an intramolecular ligand-to-ligand charge-transfer absorption band around 16 000 cm-1. The Pt-Se bond order of the Pt(C3Se5)(L) complexes is somewhat higher than the Pt-S bond order of Pt(C3S5)(L). Oxidation of these complexes by iodine has afforded the complexes with the Pt-I bond, behaving as semiconductors with electrical conductivities of 1 X (10(-6)-10(-7))S cm-1 measured for compacted pellets at room temperature. Electronic absorption, H-1 NMR, and IR spectroscopies of the complexes as well as their electrochemical properties are described.