Paper Information

Journal:   JOURNAL OF THE IRANIAN CHEMICAL SOCIETY(JICS)   DECEMBER 2010 , Volume 7 , Number 4; Page(s) 908 To 916.
 
Paper: 

SYNTHESIS AND ELECTROCHEMISTRY OF M(II) N2O2 SCHIFF BASE COMPLEXES: X-RAY STRUCTURE OF {NI[BIS(3-CHLOROACETYLACETONE)ETHYLENEDIIMINE]}

 
 
Author(s):  KIANFAR A.H.*, ZARGARI S., KHAVASI H.R.
 
* DEPARTMENT OF CHEMISTRY, YASOUJ UNIVERSITY, YASOUJ, IRAN
 
Abstract: 

The synthesis and characterization of [Ni (BCE)] and [Cu (BCE)] (where BCE=bis (3-chloroacetylacetone) ethylenediimine) are described. The coordination geometry of [Ni (BCE)] was determined by X-ray crystallography. It was found to be planar and four coordinate in the solid state. The electrochemical properties of M (Chel), where M=Co (II), Ni (II) and Cu (II), and Chel= BAE (bis (acetylacetone) ethylenediimine), BBE=bis (benzoylacetone) ethylenediimine, BFE (bis (1, 1, 1-triflouroacetylacetone) ethylenediimine and BCE ligands were investigated in DMF and DMSO as solvents. The oxidation potentials changed from left to right in the periodic table in the trend: Co< Ni<Cu, while the reduction potentials changed according to the trend: Ni>Co >Cu.
The oxidation potentials of M (II) to M (III) (M=Ni and Cu) increased according to the Schiff base ligands in the trend: BAE<BBE<BCE<BFE, while the reduction potentials followed a reverse trend: BAE>BE>BCE>BFE. The oxidation potentials of M (II) to M (III) increased according to the solvent in the trend: DMSO<DMF.

 
Keyword(s): COBALT(II), NICKEL(II), CU(II), SCHIFF BASE COMPLEXES, ELECTROCHEMISTRY
 
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