The Preparation, Characterization, and X-Ray Structural Analysis of Dichlorobis[1-methyl-3-(2-propyl)-2(3H)-imidazolethione]mercury(II)


Chemistry and Biochemistry

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A new compd. of Hg(II) chloride complexed to 1-methyl-3-(2-propyl)-2(3H)-imidazolethione (mipit) was prepd. and characterized via std. methods and x-ray crystallog. The structural significance of this study is that it shows one of the few monomeric examples of a Hg(II) chloride thione complex reported to date. The compd. crystallizes in space group P21/c with a 17.143(6), b 17.047(6), c 14.759(5) Å, β 105.899(5)°, Z = 8. The coordination sphere is distorted tetrahedral with Hg-S bonds and Hg-Cl bond distances falling within the normally expected ranges. Bond angles ranged from 108.11(4)° to 115.51(4)° with the widest angle being obsd. for the S-Hg-S linkage. Ligand bond distances and angles including the C=S distance are within the normally expected values obsd. for this compd.