Max Preisenberger, P. Pyykkö, A. Schier
Nov 23, 1999
Citations
0
Influential Citations
13
Citations
Journal
Inorganic Chemistry
Abstract
The reaction of disodium phenyltrithiophosphonate with (triorganophosphine)gold(I) chlorides in the molar ratio 1:2 in dichloromethane gives high yields of the corresponding dinuclear complexes PhP(S)[SAu(PR3)]2 with R = Ph (1), Me, Et, i-Pr, and o-Tol. The crystal structure of complex 1 has been determined by single crystal X-ray methods. The two gold atoms are bound to separate sulfur atoms, leaving only one sulfur atom uncoordinated. The compound is stabilized by an intramolecular Au···Au contact. This result shows that individual auration of sulfur atoms is energetically preferred over double auration of only one sulfur atom. An analogous product is obtained from trisodium tetrathiophosphate hydrate and (Ph3P)AuCl in CH2Cl2/MeOH: The reaction is accompanied by partial methanolysis to give MeOP(S)[SAu(PPh3)]2. Again each gold atom is bound to a different sulfur atom. In the crystal structure of this compound, intermolecular Au···Au contacts lead to one-dimensional aggregates. All attempts to aurate th...