Synthesis and Characterization of Binuclear Complexes of Metals Transition of N’1,N’4-Bis(1-(Pyridin-2-yl)Ethylidene)Succinohydrazide

Six news dinuclear metal transition (Mn(II) (1), Fe(II) (2), Co(II) (3), Ni(II) (4), Cu(II) (5) and Zn(II) (6)) complexes have been synthesized from a new hexadentate Schiff base N’1,N’4-bis(1-(pyridin-2-yl)ethylidene)succinohydrazide (H2L). The ligand was characterized by elemental analysis, FTIR, UV-visible, 1H NMR and 13C NMR. The synthetized compounds have been investigated by elemental analysis, FTIR and UV-visible spectroscopies, molar conductance and room temperature magnetic moments measurement. The results show that the complexes 1-6 are dinuclear neutral electrolytes in DMF. Each of the two mono deprotonated tridentate arms of the ligand are coordinated to one metal ion through one iminolate oxygen atom, one azomethine nitrogen atom and one pyridine nitrogen atom. Octahedral geometries are proposed for all the complexes 1-6 formulated as (ML)2.nH2O. The structure of the Ni(II) (4) complex is confirmed by X-ray crystallography study.