Six New Transition Metal Mononuclear Complexes Of N'-(5-bromo-2-hydroxybenzylidene)nicotinohydrazide Schiff Base. Synthesis, Spectroscopic Characterization And X-ray structure Determination of the Zinc(II) Complex
The reactions of the Schiff base N'-(5-bromo-2-hydroxybenzylidene)nicotinohydrazide (H2bhbn), with
metal transition ions (Mn (II), Fe (II), Co (II), Ni (II), Cu (II) and Zn (II)) afforded two different types of
complexes formulated as [M(H2bhn)2(Cl)2(H2O)x]
.(H2O)y (M: Mn, Co, Ni or Zn) and [M(Hbhn)(Cl)(H2O)x] (M:
Fe or Cu). These compounds have been characterized by elemental analysis, UV–Vis, IR, 1H and 13C NMR
spectroscopies, molar conductivity and room temperature magnetic measurements. The structure of Zinc (II)
complex has been determined by X-ray crystallography. The complex crystallizes in the monoclinic system with
Cc space group, a = 25.8196(11) Å, b = 7.2881(3) Å, c = 17.4662(8) Å, ? = 120.566(2)°, V = 2830.0(2) Å
3
, Z =
4, R1=0.0355 (0.0384) and wR2=0.0922. The environment geometry around the Zn (II) center is best described
as a slightly distorted tetrahedral
Auteur(s) : Amadou Gueye, Farba Bouyagui Tamboura, Adama Sy, Mohamed Gaye, Nathalie Gruber, Abdelaziz Jouati
Pages : 24-30
Année de publication : 2019
Revue : IOSR Journal of Applied Chemistry (IOSR-JAC)
N° de volume : 12(4)
Type : Article
Mise en ligne par : GAYE Mohamed Lamine