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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