Synthesis, spectroscopic and X-ray structural studies of mercury(II) halide complexes of 4-methoxybenzoylmethylenetriphenylphosphorane

摘要

The reactions of the title ylide {(C6H5)(3)PCHCOC6H4OCH3)} (MBPPY) with mercury(II) chloride and mercury(II) bromide in equimolar ratios using methanol as the solvent produces crystals of [(MBPPY) (.) HgBr2](2) (1) and [(MBPPY) (.) HgBr2](2) (2), respectively. Single crystal X-ray analyses reveal the presence of centrosymmetric dimeric structures containing the ylide and HgX2 (X = Cl or Br) in both cases. The IR and NMR data of the product [(MBPPY) (.) HgI2](2) (3), formed by the reaction of mercury(II) iodide with the same ylide, are similar to those of 1 and 2. Analytical data indicate a 1:1 stoichiometry between the ylide and Hg(ll) halide in each of the three products. (C) 2007 Elsevier Ltd. All rights reserved.