Dibromidobis(1-ethyl-2,6-dimethyl-pyridinium-4-olate-κO)zinc(II).

In the bioactive title compound, [ZnBr(2)(C(9)H(13)NO)(2)], the Zn(II) atom is coordinated in a distorted tetra-hedral arrangement by two Br(-) anions and the O atoms of two zwitterionic organic ligands. The pyridinium rings are almost planar [maximum deviations = 0.004†(4) and 0.003†(4)†à ]. The ethyl groups are approximately perpendicular to the corresponding pyridinium ring planes [N-C-C-C = 88.8†(4)° in each ligand]. The packing of the mol-ecules is controlled by π-π inter-actions, with centroid-centroid distances of 3.625†(3) and 3.711†(2)†à , forming chains approximately parallel to (102). The crystal studied was non-merohedrally twinned (twin relationship between the domains 1 0 0, 0 1 0, -0.4672 -0.1864 -1 and batch scale factor of 7.39%).