175734-22-2Relevant academic research and scientific papers
Synthesis and Reactivity of Heteroleptic Complexes of Gold with 2-Thioxo-1,3-dithiole-4,5-dithiolate (dmit). X-ray Structure of [Au2(μ-dmit)(PPh3)2], (NBu4)[Au(dmit)(PPh3)], and (PPN)[Au(dmit)(C6F5)2]
Cerrada, Elena,Jones, Peter G.,Laguna, Antonio,Laguna, Mariano
, p. 2995 - 3000 (2008/10/09)
The reactions of Na2dmit (dmit = 2-thioxo-1,3-dithiole-4,5-dithiolate) with AuCIL in 1:2 ratios lead to [Au2(dmit)L2] [L = PPh3 (1), PPh2Me (2), PPhMe2 (3), PMe3 (4), CH2PPh3 (5), CH2PPh2Me (6), CH2PPhMe2 (7)]. Complexes 1, 2, and 5 react further with equimolecular amounts of [AuL(tht)]ClO4 (tht = tetrahydrothiophene), affording trinuclear complexes [Au3(dmit)L3]ClO4 (8-10). When the reactions of Na2dmit with AuCIL are carried out in 1:1 ratios and in the presence of NBu4Br, mononuclear tricoordinated gold(I) complexes NBu4[Au(dmit)L] [L = PPh3 (11), PPh2Me (12), PMe3 (13)] are obtained. Other anionic derivatives such as (PPN)2[Au2(dmit)X2] [X = C6F5 (14), Cl (15a), Br (15b)] can be obtained either by reaction of Na2dmit with Q[Au(C6F5)X] in 1:2 ratio or by addition of (PPN)X to the recently reported [Au2(dmit)(AsPh3)]. Oxidative reactions of 11,12, and 14 or 15b with excess (TTF)3(BF4)2 afford (TTF) 2[Au(dmit)2] (16), (TTF)[Au2(dmit)(C6F5)2] (17), and (TTF)3[Au2(dmit)-Br2] (18), respectively. Reaction of complex 14 with TCNQ gives the anionic gold(III) complex [Au(dmit)(C6F5)2]- (19). Electrical conductivities of these complexes at room temperature in compacted pellets are 2 × 10-3 (16), 7 × 10-5 (17), and 2 × 10-2 (18) S·cm-1. Electrocrystallization of 1 and 11 affords [Au2(dmit)2(PPh3)] (20) and the known NBu4[Au(dmit)2], respectively. X-ray structure determinations were performed for complexes 1,11, and 19b.
