105945-08-2Relevant academic research and scientific papers
Synthesis, Reactivity, and Structure of Copper, Silver, and Gold Complexes of the Type (C5Me5CS2)M(PR3)n Containing a Mono or Bidentate Dithiocarboxylato Ligand
Otto, Heiko,Werner, Helmut
, p. 97 - 104 (2007/10/02)
The reactions of (ν5-C5Me5)Cu(PR3) (1a-c) and (ν1-C5Me5)Au(PR3) (2a, c) with CS2 lead to insertion of carbon disulfide into the C5Me5-M bond and to the formation of the dithiocarboxylato complexes (C5Me5CS2)M(PR3)n (3a-c, 4a, c).The silver compound (C5Me5CS2)Ag(PPh3)2 (5) is directly obtained from 4, C5Me5Li, and excess CS2.The synthesis of 3-5 and (C5Me5CS2)Cu(PMe3)3 (6) can also be achieved almost quantitatively from C5Me5CS2Li, formed in situ from C5Me5Li and CS2, and MCl(PR3)n.By use of methyl iodide instead of MCl(PR3)n, the ester C5Me5CS2Me (7) is obtained.The results of the X-ray structural analyses of (C5Me5CS2)Cu(PPh3)2 (3a) and (C5Me5CS2)Au(PiPr3) (4c) confirm that the dithiocarboxylato ligand is coordinated via both sulfur atoms to copper but only via one sulfur atom to gold.In solution, compound 6 undergoes a fast PMe3 ligand exchange which has been studied by NMR spectroscopy.The sign of J(PH) of 6 has been determined.
