The colour isomerism and structure of some copper co-ordination compounds. Part XVI. The crystal structure of the γ-form of bis-(N-methylsalicylaldiminato)copper(II)

Abstract

A three-dimensional X-ray structural analysis of the γ-form of bis-(N-methylsalicylaldiminato)copper(II) has revealed a dimeric molecule in which monomeric halves are joined by two Cu–O bonds, 2·43 and 2·46 Å in length, to complete a square-pyramidal configuration about each copper atom. Distortions in the molecule are evidently due to the close approach of non-bonding regions. It is now seen that this compound displays three different co-ordination arrangements in its three polymorphic forms.