Obasi, L.; Okoye, C.; Ukoha, P.; Chah, K. Syntheses, Characterization and Antimicrobial Screening of N-(Benzothiazol-2-Yl)-2,5-Dichlorobenzenesulphonamide and Its Cu(I), Ni(II), Mn(II), Co(III) and Zn(II) Complexes. ajc 2012, 25, 2199-2207.