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Mercury(II) halide adducts of an olefinic double betaine: [{Hg2L2X4·6HgX2}n] [X = Cl, Br; L = cis-(p-Me2NC5H4N)2C2(COO)2]
Authors:De-Dong Wu and Thomas C. W. Mak
Affiliation:

Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong

Abstract:Two polymeric mercury(II) halide adducts of an olefinic double betaine, cis-(p-Me2NC5H4N+)2C2(COO)2 (L), have been prepared and characterized by X-ray crystallography. [{Hg2L2Cl4·6HgCl2}n] (1) crystallizes in the monoclinic space group C2/c with Z = 4, and [{Hg2L2Br4·HgBr2}n] (2) in the triclinic space group P with Z = 1. Complexes 1 and 2 are structurally similar, being composed of centrosymmetric fourteen-membered rings and nearly linear HgX2 (X = Cl, Br) moieties that are further inter-linked by weak HgX [HgCl = 2.930–3.136(9) Å, HgBr = 3.057–3.310(6) Å] and HgO [2.64, 2.75(3) Å] bonds to generate a two-dimensional polymeric network.
Keywords:
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