A three-dimensional refinement of the molecular structure of dimethylglyoximatocopper(II)

Abstract

The molecular structure of dimethylglyoximatocopper(II) has been refined using room-temperature three-dimensional data. Refinement was by anisotropic least-squares methods and the final R value was 0·063 for 1792 independent reflections. In the solid state the compound is a binuclear centrosymmetric complex in which the two copper atoms are five-co-ordinate with a square-pyramidal configuration. Standard deviations in the bond lengths are Cu–O 0·003, Cu–N 0·004, N–O 0·005, C–N 0·006, and C–C 0·007₅Å. The possibility of cyclic delocalization over the five-membered rings of the chelate monomer is discussed in relation to the results for the C–N bond lengths.