The crystal structure of mercury(II) acetamide

Abstract

Mercury(II) acetamide crystallizes in the monoclinic system, the space group P2 1/c, with two molecules per unit cell. The unit cell dimensions are: a = 8.77 ± 0.02 Å, b = 4.80±0.01 Å, c = 8.46±0.02 Å, β = 96.5±0.2°, the measured and calculated densities are 2.95 and 2.97 g/cm 3, respectively. The structure has been solved using 456 independent reflections collected about the a, b and c axes on integrated equi-inclination Weissenberg photographs and refined by least-square method to R = 0.134. The structure is built up of the discrete planar centrosymmetric Hg(CH 3CONH) 2 molecules containing two collinear covalent HgN bonds of 2.06±0.06 Å. The oxygen atoms are 3.17±0.06 Å from the mercury atom and the carboxyl-amide groups are not chelating groups in this structure. There are two oxygen atoms from two neighbouring molecules distant 2.88±0.06 Å from the mercury atom. The molecules are linked together along the c axis by OH…N hydrogen bonds of 3.05±0.06 Å. The other bond lengths are within the range expected for this class of compounds.