Bis{2-[(1H-pyrrol-2-yl)methyliminomethyl]phenolato-κ2 N,O}zinc(II)

In the title compound, [Zn(C12H11N2O)2], the ZnII atom, lying on an inversion center, is coordinated by two O atoms and two N atoms from two salicylal Schiff base ligands in a distorted square-planar geometry. A three-dimensional network is formed by intermolecular C—H⋯N hydrogen bonds and C—H⋯π contacts.

In the title compound, [Zn(C 12 H 11 N 2 O) 2 ], the Zn II atom, lying on an inversion center, is coordinated by two O atoms and two N atoms from two salicylal Schiff base ligands in a distorted square-planar geometry. A three-dimensional network is formed by intermolecular C-HÁ Á ÁN hydrogen bonds and C-HÁ Á Á contacts.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HY2222).

Comment
In preparing metal complexes, Schiff base ligands have been frequently employed (Qiu et al., 2004(Qiu et al., , 2006Shi et al., 2007;Xiao et al., 2007a,b;Xiao et al., 2008;You et al., 2006). Zinc derivatives are particularly interesting owing to their essential importance in several biological processes (You et al., 2004(You et al., , 2006Xiao et al., 2007a,b;Xiao et al., 2008). We have reported the structures of a few zinc(II) complexes (You et al., 2004;Qiu et al., 2004). As an extension of our work, we report here the structure of a zinc(II) complex with salicylal Schiff base ligands.
The title compound consists of a Zn II atom, lying on an inversion center, and two bidentate salicylal Schiff base ligands.
The central Zn II atom is coordinated by two N atoms from the pyrrole groups and two O atoms from the phenolate groups, forming a slightly distorted square-planar geometry (Fig. 1). The distortion arises from the difference between Zn-O and Zn-N bonds ( Table 1). The six-membered ring (Zn1, N1, C7, C2, C1, O1) and the benzene ring are almost co-planar with a mean deviation of 0.046 (1) Å.