Abstract A novel series of 17-membered complexes [MLCl 2](M= Co 2+, Ni 2+ and Cu 2+) have been synthesized with newly derived biologically active ligands (LI–L IV). These ligands were synthesized by the condensation of 3-subtituted-4-amino-5-hydrazino-1, 2, 4- triazole with bis (phthalaldehyde) ethylenediamine precursor. The structure of the complexes has been proposed by elemental analyses, IR, EPR, electronic spectral ...
