Crystal and molecular structure of bis-(2,2-bipyridylamine)copper(II) perchlorate

Abstract

The crystal structure of bis-(2,2′-bipyridylamine)copper(II) perchlorate, [Cu(C₁₀H₉N₃)₂](ClO₄)₂, was determined from single crystal X-ray diffraction data which was measured on a diffractometer. The crystals are monoclinic, space group C2/c, with a= 9·35, b= 12·88, c= 19·69 Å, β= 102·8°, and Z= 4. The structure was solved by conventional Patterson and Fourier methods. The two-fold axis of the space group is utilized by the complex with the pyridine nitrogen atoms co-ordinating to the copper in a pseudotetrahedral arrangement. The dihedral angle between the N–Cu–N planes of the two ligands is 55·6°. This geometry seems to result from steric interaction between the ligands.