Acta Cryst. (2008). E64, m1284-m1285  [ doi:10.1107/S1600536808029061 ]

Diaqua(2,2'-bipyridine-5,5'-dicarboxylato-²N,N')(ethylenediamine-²N,N')copper(II) 2.5-hydrate

M. Yousefi, A. Khalighi, N. Tadayon Pour, V. Amani and H. R. Khavasi

Abstract: In the molecule of the title compound, [Cu(C₁₂H₆N₂O₄)(C₂H₈N₂)(H₂O)₂]·2.5H₂O, the Cu^II atom is six-coordinated in a distorted octahedral configuration by two N atoms from a 2,2'-bipyridine-5,5'-dicarboxylate anion, two N atoms from ethylenediamine and two O atoms from two water molecules. There are also two and a half water molecules in the asymmetric unit. The planar five-membered ring is nearly coplanar with the adjacent pyridine rings, while the other five-membered ring adopts a twisted conformation, probably due to hydrogen bonding. In the crystal structure, intra- and intermolecular N-HO and O-HO hydrogen bonds link the molecules.

Online 20 September 2008

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