Phenylmercury(II) complexes with pyrimidine-2-thionato ligands: Synthesis and characterization

The treatment of phenylmercury(II) acetate with several pyrimidine-2-thiones (RpymSH) results in the formation of the corresponding pyrimidine-2-thionato complexes [PhHg(RpymS)]. The crystal structure of [PhHg(4,6-Me2pymS)] shows a nearly lineal coordination environment for the mercury atom, with the ligand using the exocyclic sulfur atom to bind the metal; a weak interaction between mercury and one of the heterocyclic nitrogens is also observed. Vibrational and 1H, 13C and 199Hg NMR spectroscopic data of the complexes are discussed and related to the structure.