Preparation and spectroscopic investigation of newly schiff Base of 5-chloro-2-hydroxybenzylidene)-3,4,5-trihydroxybenzohydrazone with some metal ions
Document Type
Article
Publication Date
1-1-2011
Abstract
An ethanolic solution of metal salts was added slowly to an ethanolic solution of 5-chloro-2hydroxybenzylidene)-3,4,5-trihydroxybenzohydrazone with few drops of Methylamin to give complexes with the general formula [M(GHL2) 2]. 2H 2O, [Cu 2(GHL2) 2]. 4H 2O and [Cd(GHL2)(CH 3COO) 2]. 2H 2O where M is Ni(II) and Zn(II), GHL2 is 5-chloro-2-hydroxybenzylidene)-3,4,5- trihydroxybenzohydrazone. The resulting complexes were characterized by elemental analysis, magnetic measurements and spectral studies. The Schiff base GHL2 ligand acts as tridentate ligand was coordinated with the metal ions through O, N, O except with Cd(II) as the ligand behaves as bidentate ligand coordinated with Cd(II) ion through O, N atoms. However, [M(GHL2) 2J. 2H 2O and [Cd(GHL2)(CH,COO) 2]. 2H 2O were proposed to possess Octahedral geometry while [Cu 2(GHL2) 2]. 4H 2O was proposed to possess tetrahedral geometry.
Keywords
5-chloro-2hydroxybenzylidene)-3, 4, 5- trihydroxybenzohydrazone complexes, Hydrazone complexes, Schiff base complexes, Spectral studies
Divisions
CHEMISTRY
Publication Title
Oriental Journal of Chemistry
Volume
27
Issue
4
Additional Information
Department of Chemistry, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA