Acta Cryst. (2011). E67, m1102-m1103  [ doi:10.1107/S1600536811027851 ]

catena-Poly[[diaquacalcium]bis[-2-(1,3-dioxoisoindolin-2-yl)acetato]-³O,O':O;³O:O,O']

M. H. Bhatti, U. Yunus, S. Saeed, S. R. Shah and W.-T. Wong

Abstract: In the title complex, [Ca(C₁₀H₆NO₄)₂(H₂O)₂]_n, the Ca^II atom lies on a twofold rotation axis and adopts a dodecahedral geometry. The Ca^II atom is octacoordinated by two O atoms from two water molecules and six O atoms from four acetate ligands. Each acetate acts as a tridentate ligand bridging two Ca^II atoms, resulting in a chain running along the c axis. O-HO and C-HO hydrogen bonds connect the chains into a two-dimensional network parallel to [011]. - interactions between adjacent isoindoline-1,3-dione rings [centroid-centroid distance = 3.4096 (11) Å] further consolidate the structure. One of the carboxylate O atoms is disordered over two sites in a 0.879 (12):0.121 (12) ratio.

Online 16 July 2011

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