Physical characterization of some complexes of organic nitrogen donor compounds

The stability constants of the complexes of cyanopyridine and aminoantipyrine with some divalent transition metal chlorides were determined at different temperatures. The thermodynamic parameters were calculated; the obtained data reveal that the complexation is an endothermic process. Also it was f...

Full description

Saved in:
Bibliographic Details
Published in:Arabian journal of chemistry 2011-04, Vol.4 (2), p.169-178
Main Authors: Abd El Wahed, M.G., Elmesallamy, M.A., Kater, H.M., El Gamel, M.M., Khalil, N.A.
Format: Article
Language:English
Subjects:
Conductometry
Spectroscopic and thermal studies
Stability constants
Thermodynamic functions
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The stability constants of the complexes of cyanopyridine and aminoantipyrine with some divalent transition metal chlorides were determined at different temperatures. The thermodynamic parameters were calculated; the obtained data reveal that the complexation is an endothermic process. Also it was found that the type of bonding between the ligands and the corresponding metal ion is mainly ionic in nature. The stoichiometry of the formed complexes was found to be M:L and M:2L. The structure of some prepared complexes was confirmed by IR, 1H NMR spectra as well as elemental analysis. Thermal stability was studied using TGA technique.
ISSN:1878-5352
1878-5379
DOI:10.1016/j.arabjc.2010.06.034