Five-coordinate zinc(II) complexes with optically active Schiff bases derived from (1R,2R)-(−)cyclohexanediamine: X-ray structure and CP MAS NMR characterization of [cyclohexylenebis(5-chlorosalicylideneiminato)zinc(II)pyridine] and [cyclohexylenebis(5-

Five-coordinate zinc(II) complexes with optically active Schiff bases derived from (1R,2R)-(−) cyclohexanediamine. X-ray structure and CP MAS NMR characterization of [cyclohexylenebis(5chlorosalicylideneiminato) zinc(II)pyridine] and [cyclohexylenebis(5-bromosalicylideneiminato) zinc(II)pyridine] (1R,2R)-chxn(5Clsalal)2 zinc(II) (1a) and (1R,2R)-chxn(5-Brsalal)2 zinc(II) (2a) turned out into axial pyridine adducts. Coordination sphere of Zn(II) atoms in both pyridine adducts is a slightly distorted square pyramid and axially bonded pyridine. Complexes were characterized by 1H NMR in solution and 13C CP MAS NMR. NOE differential experiments revealed significant steric interactions between C(6)-H in the phenyl ring, cyclohexyl C(1)-H and imine hydrogen.