Acta Cryst. (2012). E68, m235  [ doi:10.1107/S1600536812003340 ]

Dichlorido[(1R,2R)-N-(pyridin-2-ylmethyl)cyclohexane-1,2-diamine-³N,N',N'']mercury(II)

C.-Z. Gao, X.-Y. Zhang and L. Cheng

Abstract: In the title compound, [HgCl₂(C₁₂H₁₉N₃)], the Hg^II ion is coordinated by three N atoms of the (1R,2R)-N-(pyridin-2-ylmethyl)cyclohexane-1,2-diamine ligand and by a Cl atom in the basal plane, and by a second Cl atom in the apical position, within a distorted square-pyramidal geometry. The coordination of the enantiopure ligand to the metal atom renders the central N atom chiral with an S configuration, so the complex is enantiomerically pure and corresponds to the S,R,R diastereoisomer. Molecules are linked via weak N-HCl hydrogen bonds into a one-dimensional hydrogen-bonding supramolecular chain along the crystallographic b axis.

Online 4 February 2012

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