Acta Cryst. (2007). E63, m2526-m2527  [ doi:10.1107/S1600536807043899 ]

Poly[bis[diaqua(isonicotinato-²O,O')dysprosium(III)][bis(isonicotinato-O)copper(II)]tetra(₃-isonicotinato-³O:O':N)]

D.-Z. Kuang, Y.-L. Feng, Y.-L. Peng and Y.-F. Deng

Abstract: The title compound, {[Dy(C₆H₄NO₂)(H₂O)₂]₂[Cu(C₆H₄NO₂)₂](C₆H₄NO₂)₄}_n, is a three-dimensional coordination polymer. The six-coordinate Cu^II atom, lying on an inversion center, is bonded to two O atoms from two monodentate isonicotinate ligands and four N atoms from four bridging isonicotinate ligands. Two Dy^III atoms form a centrosymmetric dinuclear unit and each Dy^III atom is eight-coordinated by six O atoms from five different isonicotinate ligands and two O atoms from two water molecules. These metal coordination units are connected by the bridging isonicotinate ligands, generating a three-dimensional network. The crystal structure is further stabilized by hydrogen bonds.

Online 15 September 2007

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