97391-01-0Relevant academic research and scientific papers
Polydentate ligands containing phosphorus. 8. Coordination complexes of a new uninegative tridentate ligand, tris(diphenylthiophosphinoyl)methanide, and related compounds and the molecular structure of (bis(dimethylthiophosphinoyl)(diphenylthiophosphinoyl)methanido) chloromercury(II)
Grim, Samuel O.,Smith, Patricia H.,Nittolo, Suzanne,Ammon, Herman L.,Satek, Larry C.,Sangokoya, Samuel A.,Khanna, Raj K.,Colquhoun, Ian J.,McFarlane, William,Holden, James R.
, p. 2889 - 2895 (2008/10/08)
The reaction of mercury(II) chloride, bromide, or iodide in ethanol solution with tris(diphenylthiophosphinoyl)methane, [(C6H5)2P(S)]3CH, or bis(dimethylthiophosphinoyl)diphenylthiophosphinoylmethane, [(CH3)2P(S)]2[(C6H5) 2P(S)]CH, yields coordination compounds of the type {[(C6H5)2P(S)][R2P(S)] 2C}HgX, where R is C6H5 or CH3, and X is Cl, Br, or I. The X-ray crystallographic structural determination of (bis(dimethylthiophosphinoyl)(diphenylthiophosphinoyl)methanido) chloromercury(II), {[(CH3)2P(S)]2[(C6H 5)2P(S)]C}HgCl (monoclinic, P21/a, Z = 4, a = 1.48 (1) nm, b = 1.394 (9) nm, c = 1.194 (8) nm, and β = 112.038 (6)°), proves that the organophosphorus ligand coordinates to mercury in a tridentate fashion via the three sulfur atoms to form a cage compound of six-membered chelate rings. Chlorine occupies the fourth coordination position about the pseudotetrahedral mercury atom. Raman spectra of the solid coordination compounds {[R2P(S)]3C}MX, where M = Hg, Cd, indicate an unusually large decrease of the P-S stretching frequency compared to those of the neutral parent ligands. Phosphorus-31 NMR data are also reported for the complexes.
