Acta Cryst. (2006). E62, m3194-m3196  [ doi:10.1107/S1600536806044928 ]

catena-Poly[[[aqua(pyrazino[2,3-f][1,10]phenanthroline-²N,N')copper(II)]--terephthalato-²O:O'] N,N-dimethylformamide monohydrate]

G.-B. Che, Z.-L. Xu and S. W. Ng

Abstract: In the title compound, [Cu(C₈H₄O₄)(C₁₄H₈N₄)(H₂O)]·C₃H₇NO·H₂O, the Cu^II atom binds a water molecule and is chelated by the pyrazinophenanthroline N-heterocycle. It is also linked covalently to a terephthalate dianion that lies on a special position of site symmetry. This dianion serves as a spacer to connect adjacent square-pyramidal metal atoms into a helical chain that propagates along the b axis of the monoclinic unit cell. The chain motif is consolidated into a layer structure by hydrogen bonds involving the coordinated and uncoordinated water molecules. The Cu atom and the coordinated water molecule lie on a mirror plane, while the N-heterocycle, the disordered uncoordinated water molecule and disordered dimethylformamide solvent molecule lie about a mirror plane.

Online 3 November 2006

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