(Aceto-nitrile-κ N )aqua-[ N , N '-bis-(pyridin-2-yl-methyl)ethane-1,2-di-amine-κ 4 N , N ', N '', N ''']zinc(II) perchlorate.

The structure of the title compound, [Zn(C14 H18 N4 )(C2 H3 N)(H2 O)](ClO4 )2 , contains a six-coordinate cation consisting of the tetra-dentate bis-picen ligand, coordinated water, and coordinated aceto-nitrile, with the latter two ligands adopting a cis configuration. There are two formula units in the asymmetric unit. Both cations show almost identical structural features with the bis-picen ligand adopting the more common cis -β conformation. One of the four perchlorate anions is disordered over two positions, with occupancies of 0.9090 (15) and 0.0910 (15). There is extensive inter-ionic hydrogen bonding between the perchlorate anions and O-H and N-H groups in the cations, including a bifurcated hydrogen bond between an N-H group and two O atoms of one perchlorate anion. As a result of this extended hydrogen-bond network, the ions are linked into a complex three-dimensional array.