Diaqua-(2,2′-bipyridine-5,5′-dicarboxyl-ato-κ2 N,N′)(ethyl-enediamine-κ2 N,N′)copper(II) 2.5-hydrate

Abstract

In the mol-ecule of the title compound, [Cu(C12H6N2O4)(C2H8N2)(H2O)2] ·2.5H2O, the CuII atom is six-coordinated in a distorted octa-hedral configuration by two N atoms from a 2,2′-bipyridine-5, 5′-dicarboxyl-ate anion, two N atoms from ethyl-enediamine and two O atoms from two water mol-ecules. There are also two and a half water mol-ecules 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 inter-molecular N - H⋯O and O - H⋯O hydrogen bonds link the mol-ecules.