Molecular complexes. Part VIII. The crystal structure of the 1:2 complex of bis-8-hydroxyquinolinatocopper(II) and 1,2,4,5-tetracyanobenzene

Abstract

The three-dimensional crystal structure of the 1:2 complex of bis-8-hydroxyquinolinatocopper(II) and 1,2,4,5-tetracyanobenzene has been determined by photographic and counter techniques. The results of the two determinations agree to within the estimated standard deviations of the parameters, and the dimensions of the component molecules are similar to those observed in other structures. The crystal is composed of stacks of alternate donor and (2) acceptor molecules, characteristic of a molecular complex. The relative orientations of the molecules are discussed in terms of a balance between charge transfer, dipole–dipole, and steric repulsion forces. The forces producing a change from the 1:1 stoicheiometry found in the corresponding palladium(II) complex are also discussed.