Crystal structures of thiocyanate polyamine copper(II) complexes. Part 7. (3,6-Diazaoctane-1,8-diamine)isothiocyanatocopper(II) perchlorate: a disordered structure

Abstract

The crystal structure of the title complex has been determined by three-dimensional X-ray data. Crystals are orthorhombic, space group Pca2₁ with Z= 8 in a unit cell of dimensions a= 23.90(4), b= 8.56(2), and c= 14.71(3)Å. The structure has been solved by Patterson and Fourier methods and refined by least-squares techniques to R 0.106 for 1 489 refined reflections measured photographically. In contrast to the corresponding bis(thiocyanate) derivative, the thiocyanate group in the present complex is bonded via the nitrogen atom; the co-ordination polyhedron of the copper(II)ion is intermediate between square pyramidal and trigonal bipyramidal. A qualitative interpretation of the structural disorder is given.