trans-[N,N′-Bis(salicylidene)cyclohexane-1,2-diaminato]nickel(II)–chloroform (1/1)
Abstract
In the title complex, trans-{2,2′-[cyclohexane-1,2-diylbis(nitrilomethylidyne)]diphenolato-κ4O,N,N′,O′}nickel(II)–chloroform (1/1), [Ni(C20H20N2O2)]·CHCl3, the Ni atom has a square-planar geometry, slightly tetrahedrally distorted. The Ni—N and Ni—O bonding distances are within the expected ranges for Ni–Schiff base derivatives. The diimine bridge has a gauche conformation with the cyclohexyl ring almost coplanar with the NiN2O2 plane. The complex molecules pack in dimers with an Ni⃛Ni distance of 3.59 (1) Å and form a three-dimensional structure displaying a herring-bone configuration. Channels are occupied by solvent molecules, which are involved in C—H⃛O hydrogen bonds with the ligand O atoms.