The paper presented some aspects regarding the synthesis of some Cu(II
) and Co(II) complex combinations with hydrazine-derived ligands. The
prepared complex combinations were characterized by electronic spectra
studies, IR, RES and specific molar conductibility measurements. It w
as appreciated that these Cu)II) and Co(II) complex combinations with
the hydrazine-derived ligands are part of the distorted O-h symetry gr
oup.