Acta Cryst. (2009). E65, m1655  [ doi:10.1107/S1600536809049162 ]

Poly[bis[₂-2-(2-pyridylmethylamino)ethanesulfonato]cadmium(II)]

Z.-X. Du and X.-H. Chang

Abstract: The title compound [Cd(C₈H₁₁N₂O₃S)₂]_n, is a two-dimensional coordination polymer based on a Cd²⁺ atom and deprotonated 2-(2-pyridylmethylamino)ethanesulfonic acid (Hpmt). The complex has molecular symmetry C_i as a consequence of the Cd^II being located on an inversion centre. Two N atoms of each pmt^- ligand coordinate to the Cd²⁺ ion and its sulfonate O atom bonds to an adjacent Cd²⁺ ion. 24-membered (-Cd-N-C-C-S-O-)₄ rings are formed between neighbouring Cd²⁺ ions; these are interconnected, forming a two-dimensional layer structure. In respect to stereogenic amino N atom and the inversion symmetry of the complex, the compound is a 1:1 racemate. The crystal packing is stabilized by intermolecular N-HO hydrogen bonds and further connected by - stacking interactions between the pyridyl rings [average interplanar distance and centroid-centroid separation = 3.582 (1) and 3.634 (1)Å, respectively], forming a three-dimensional supramolecular architecture.

Online 21 November 2009

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