Received 13 November 2012
In the title compound, [Cu(C4H2O4)(C11H9N3O)2(H2O)]n, CuII ions on crystallographic twofold rotation axes are coordinated in a square pyramidal environment by two trans O atoms belonging to two monodentate fumarate anions, two trans isonicotinamide pyridyl N-donor atoms from monodentate, pendant 3-pyridylisonicotinamide (3-pina) ligands, and one apical aqua ligand, also sited on the crystallographic twofold rotation axis. The exobidentate fumarate ligands form [Cu(fumarate)(3-pina)2(H2O)]n coordination polymer chains that are arranged parallel to . In the crystal, these polymeric chains are anchored into supramolecular layers parallel to (100) by O-HO hydrogen bonds between aqua ligands and unligating fumarate O atoms, and N-HO(=C) hydrogen bonds between 3-pina ligands. In turn, the layers aggregate by weak C-HN and C-HO hydrogen bonds, affording a three-dimensional network.
Data collection: APEX2 (Bruker, 2006); cell refinement: SAINT (Bruker, 2006); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Crystal Maker (Palmer, 2007); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: LH5556 ).
We gratefully acknowledge the donors of the American Chemical Society Petroleum Research Fund for funding this work.
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