Crystal structure of the 1 : 1 adduct of bis(pyridine-2-carboxylato)copper(II) with potassium thiocyanate

Abstract

The crystal structure of the 1 : 1 adduct of bis(pyridine-2-carboxylato)copper(II) with potassium thiocyanate has been determined by X-ray diffraction methods and refined by full-matrix least-squares procedures. The orthorhombic unit-cell (space group Pnam) has dimensions a= 8·433, b= 14·274, c= 12·842 Å for Z= 4. The crystal consists of discrete bis(pyridine-2-carboxylato)copper(II) molecules, of space group imposed molecular symmetry , and potassium and thiocyanate ions occupying lattice sites on mirror planes in the space group. The copper-atom environment is square co-planar with Cu–O 1·942 and Cu–N 1·961 Å. The thiocyanate ion is planar with bond lengths C–S and C–N 1·628 and 1·153 Å respectively.