Crystal structure of tetra­kis­(μ2-(E)-24-di­bromo-6-{2-(pyridin-2-yl)eth­ylimino­meth­yl}phen­olato)trizinc bis­(perchlorate) aceto­nitrile disolvate

摘要

The title compound, [Zn3(C14H11Br2N2O)4](ClO4)2·2CH3CN, crystallizes as a symmetrical trinuclear cation with all three metal atoms being located on a twofold rotation axis. It contains a tetra­hedral Zn^II atom that bridges two six-coordinate Zn^II atoms. The complex contains N- and O-donor atoms of four tridentate 2,4-di­bromo-6-{[2-(pyridin-2-yl)eth­yl]imino­meth­yl}phenolate ligands. The ratio of Zn^II atoms to ligands is 3:4. The two terminal Zn^II cations adopt distorted octa­hedral geometries and the central Zn^II cation adopts a distorted tetra­hedral geometry. In the cation there are π–π inter­actions between the di­bromo­phenyl rings, as well as halogen-bonding inter­actions between the di­bromo­phenyl rings in the cation, which stabilize its conformation. In addition, there are C—H⋯O inter­actions between the anions and both the cations and solvent mol­ecules as well as C—H⋯N inter­actions between the cation and solvent mol­ecules. These inter­species inter­actions link the cations, anions and solvent mol­ecules into a complex three-dimensional array