Copper(II) polyamine complexes with N-benzothiazole sulfonamides as counterions - Synthesis, crystal structures, and properties of [Cu(dien)(2)](L1)(2) [HL1=N-2-(benzothiazole)naphtalenesulfonamide, dien = diethylentriamine] and [Cu(en)(2)(H2O)(2)](L2)(2) [HL2=N-2-(6-chlorobenzothiazole)toluenesulfonamide, en = ethylenediamine] - Superoxide dismutase-like activity

Copper(II) complexes of new N-benzothiazole sulfonamides (HL1= N-2-(benzothiazole)naphtalensulfonamide and HL2 = N-2-(6-chlorobenzothiazole)toluenesulfonamide) with ethylenediamine (en) and diethylenetriamine (then) have been synthesized and characterised. The crystal structures of [Cu(dien)(2)](L1)(2) (1) and [Cu(en)(2)(H2O)(2)](L2)(2) (2) compounds have been determined. The metal centre adopts a 4+2 distorted octahedral environment in both complexes. Unusually, the sulfonamidate anions act as counterions. Spectroscopic properties arc in good agreement with the crystal structures. The superoxide dismutase (SOD)-like activity of complex 2 has been tested.