Copper (Ii) Coordination Compounds: Classification and Analysis of Crystallographic and Structural Data

This review summarizes the data for over twelve hundred four - and five - coordinate copper(II) coordination compounds. The four-coordinate derivatives are mostly distorted square-planar. The five-coordinate derivatives are mostly square-pyramidal. The most common ligands are oxygen- and nitrogen- donors. There is a trend for the Cu-L distance to increase with covalent radius of the coordinated atom and also increasing coordination number. There are three types of isomerism - distortion, cis- and trans- and configuration. Several relationships are found and discussed.