Acta Cryst. (2008). E64, m376  [ doi:10.1107/S1600536808001335 ]

Poly[tetraaqua-₃-pyridine-3,5-dicarboxylato-strontium(II)]

H. Aghabozorg, A. Nemati, Z. Derikvand, M. Ghadermazi and S. Daneshvar

Abstract: The reaction of strontium(II) nitrate with the proton-transfer compound (pdaH₂)(py-3,5-dc)·H₂O (where pda = propane-1,3-diamine and py-3,5-dcH₂ = pyridine-3,5-dicarboxylic acid) leads to the formation of the title polymeric compound, [Sr(C₇H₃NO₄)(H₂O)₄]_n. The propane-1,3-diaminium cation is not incorporated in this crystal structure. The Sr^II atom lies on an inversion centre and is eight-coordinated by four O atoms from three py-3,5-dc ligands and four O atoms from four coordinated water molecules. The coordination polyhedron of the Sr^II atom is a distorted dodecahedron. These binuclear units are connected via the carboxylate O atoms to build a one-dimensional polymeric chain. In the crystal structure, non-covalant interactions consisting of hydrogen bonds (X-HO, with X = O and C) and - stacking interactions [3.4604 (19) Å] connect the various components to form a supramolecular structure.

Online 23 January 2008

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