T. Tahirov et al., STRUCTURE OF 3,10-DIMETHYL-4,9-DIAZA-3,9-DODECADIENE-2,11-DIONE DIOXIMATO(1-)]-(ISOTHIOCYANATO)COPPER(II), Acta crystallographica. Section C, Crystal structure communications, 49, 1993, pp. 801-803
The Cu(II) ion is five coordinated in a distorted square-pyramidal geo
metry with the four N atoms equatorial and an N-bound isothiocyanate a
xial. It deviates from the best plane formed by the four N atoms towar
ds the isothiocyanate N atom. The axial Cu-N distance is longer than t
he equatorial Cu-N distances. Comparison of the present work with othe
r similar complexes reveals some steric effects of the monodentate lig
and -NCS- on the coordination geometry.