Crystal structure of aquo-2-benzothiazolin-2-ylideneaminomethylpyridine(picolinato)copper(II) perchlorate

Abstract

The crystal structure of the title compound has been determined from diffractometer data by the heavy-atom method and refined by block-diagonal least-squares techniques to R 5·9% for 3515 observed reflections. Crystals are triclinic, space group P, with unit-cell dimensions: a= 15·001(6), b= 8·803(4), c= 9·099(6)Å, α= 108·3(1), β= 111·8(1), γ= 84·3(1)°, Z= 2. The copper is five-co-ordinated by an oxygen and a nitrogen atom from the picolinic ligand [Cu–O 1·957(4), Cu–N 2·021(5)Å] and two nitrogen atoms (pyridine and imine) from 2-benzothiazolin-2-ylideneaminomethylpyridine [Cu–N 1·998(4), 1·981(5)Å], all at the base of the co-ordination pyramid, the water molecule [Cu–O 2·256(5)Å] being at the apex. Spectral and magnetic properties are in accord with this structure.