Synthesis, crystal structure and spectral studies of mercury(II) complexes containing the mixed ligands benz-1,3-imidazoline-2-thione, benz-1,3-oxazoline-2-thione, benz-1,3-thiazoline-2-thione, and diphosphine

Reaction of [Hg(OAc)(2)] with two mole proportion of LH(LH= benz-1,3-imidazoline-2-thione, benz-1,3-oxazoline-2-thione or benz-1,3-thiazoline-2-thione) in the presence Et3N gave linear complexes of the type [HgL2]. Treatment of [HgL2] with two mole proportion of PPh3 or one mole proportion of the diphosphine Ph2P(CH2)(n) PPh2 gave tetrahedral complexes of the type [HgL2(PPh3)(2)], [HgL2 (m-diphos)](2) (n=1) or [HgL2(diphos)] (n= 2 or 3) respectively, While treatment with two mole proportion of Ph2PCH2 PPh2(dppm) gave octahedral complexes of the type[HgL2 (dppm)(2)]. The preparated complexes have been characterized by mean of elemental analysis, molar conductance, i.r. spectral data, H-1,C-13-{H-1},P-31-{H-1}n. m.r.data. Single crystal x-ray analysis of two of the complexes (11 and 13) has reveled the presence of a tetrahedral coordination geometry about mercury.