Tetra-aqua-bis(4,4′-bipyridine)zinc(II) bis-(trans-4-hydroxy- cinnamate)

Abstract

The title complex, [Zn(C10H8N2) 2(H2O)4](C9H7O 3)2, was obtained by the hydro-thermal reaction of zinc sulfate with mixed 4-hydroxy-lcinnamic acid (H2L) and 4,4′-bipyridine (4,4′-bipy) ligands. The complex consists of a centrosymmetric [Zn(4,4′-bipy)2(H2O) 4]2+ cation with the metal centre in a distorted ZnN 2O4 coordination, and of two HL- anions. Extensive O - H⋯O and O - H⋯N hydrogen-bonding inter-actions between the constituents lead to the formation of a three-dimensional network.