Bulletin of the Chemical Society of Ethiopia

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Synthesis and characterization of novel M(II) (M = Mn(II), Ni(II), Cu(II) or Zn(II)) complexes with tridentate N2,O-donor ligand (E)-2-amino-N’-[1-(pyridin-2-yl)- ethylidene]benzohydrazide

C. H. Kane, D. Tinguiano, F. B. Tamboura, I. E. Thiam, A. H. Barry, M. Gaye, P. Retailleau


The coordination chemistry towards the M(II) metal centre (M = Mn, Ni, Cu or Zn) of the hydrazone ligand (E)-2-amino-N’-[1-(pyridin-2-yl)ethylidene]benzohydrazide (H3L) has been explored and complexes having formulae [Mn(H2L)2] (1), {[Ni(H2L)2].DMF.0.4H2O} (2), {[Cu2(H2L)2(µ-Cl)2].DMF} (3) and [Zn(H2L)2] (4) have been isolated and characterized by IR, UV-Visible spectroscopy, elemental analysis and X-ray crystal diffraction. Structural studies reveal that the mononuclear complexes (1), (2) and (4) adopt highly distorted octahedral geometries while the dinuclear complex (3) adopts a square pyramidal geometry around each copper(II) ion.


KEY WORDS: Schiff base, Phenolate, Manganese(II), Nickel(II), Copper(II), Zinc(II), Mononuclear complexes, X-Ray structure


Bull. Chem. Soc. Ethiop. 2016, 30(1), 101-110.

AJOL African Journals Online