GOLD COMPLEXES WITH 2-SELENOXO-1,3-DITHIOLE-4,5-DITHIOLATO

The reaction of Na(2)dmise (dmise = 2-selenoxo-1,3-dithioIe-4,5-dithie late) with [AuClL] in 1:2 molar ratio affords [Au-2(dmise)L-2] (L = PR 3 or CH2PPh3) but in 1:1 ratio in the presence of (NBu4) Pr gives (NBu 4)[Au(dmise)L]. The PPh2Me dinuclear derivative further reacts with [A u(OClO3)(PPh2Me)] to give [Au-3(dmise)(PPh2Me3)(3)]ClO4. The reaction with [Au-2(P-P)Cl-2] renders [Au-2(P-P)(dmise)](n) with different nucl earity depending on the diphosphine used (P-P = dppe, n = 1; dppm, n = 2). Anionic derivatives (PPN)(2)[Au-2(dmise)(C6F5)(2)] and (PPN)[Au(d mise)(2)] are obtained by reaction with the corresponding haloanionic gold complexes. (C) 1997 Elsevier Science Ltd.