Synthesis of the first trithiocarbonatogold complex: [N(PPh3)2]2[Au2(µ2-η2-CS3)2]. First crystal structure of a µ2-η2-bridging trithiocarbonato complex

Abstract

The reaction of [N(PPh₃)₂][Au(SH)₂] with CS₂ gives [N(PPh₃)₂]₂[Au₂(µ²-η²-CS₃)₂] whose crystal structure shows planar [Au₂(µ²-η²-CS₃)₂]^2– anions and two [N(PPh₃)₂] cations; the coordination at gold is almost linear [SAuS 172.80(5)°] and both gold atoms are doubly bridged by CS₃ anions, associated with a very short Au ⋯ Au contact of 2.7998(4)Å.