NMR studies of mercury 1,1-dithiolate tricyclohexylphosphine complexes. The crystal and molecular structure of [Hg(S 2CNEt 2)(P(C 6H 11) 3)(ClO 4)] 2·∼0.6CH 2Cl 2

Abstract

The crystal structure of Hg(S 2CNEt 2)(P(C 6H 11) 3)(ClO 4) shows a dimeric complex resulting from two bridging sulfur atoms linking two mercury atoms together. Each mercury atom is coordinated by three sulfur atoms, a phosphorus atom and an oxygen atom from a weakly coordinating perchlorate anion. The resulting coordination environment may be described as an irregular five-coordinate geometry. The crystals of [Hg(S 2CNEt 2)(P(C 6H 11) 3)(ClO 4)] 2 are monoclinic, P2 1/ c ( C 5 2h , No. 14), a=13.726(4), b=23.623(6), c=20.256(6) Å, β= 108.36(3) o, Z=4. 35Cl NMR data show that in the complexes Hg(S-S)(P(C 6H 11) 3)(ClO 4) (S-S=S 2CNEt 2, S 2CO iPr, S 2P(O iPr) 2) the perchlorate anion is coordinated in dichloromethane solution at low temperature.