Thermodynamics of bis-β-diketonato complexes of Cu(II) and Ni(II)

Rao, Balachandra ; Mathur, H. B. (1971) Thermodynamics of bis-β-diketonato complexes of Cu(II) and Ni(II) Journal of Inorganic and Nuclear Chemistry, 33 (9). pp. 2919-2932. ISSN 0022-1902

Full text not available from this repository.

Official URL:

Related URL:


The thermodynamic functions of formation of Cu(II) and Ni(II) complexes of some β-diketones, viz. acetylacetone, benzoylacetone, anisoylacetone and dibenzoylmethane have been determined in 75 vol.% dioxane + 25 vol.% water. The enthalpy changes increase in the order: HBZBZ > HAYAC > HBZAC > HACAC. This is also the order of stability or free energy change. The thermodynamic functions have been separated into temperature dependent and temperature independent components. The increase in the magnitude of -ΔG° and ΔS° and a decrease in the magnitude of -ΔH¯, in water-dioxane medium as compared to water, results from the difference in electrostatic interaction between metal ion and ligand anion in the two media. The thermodynamic parameters have been discussed in relation to the nature of bonding and the symmetry of the metal complexes.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
ID Code:31367
Deposited On:05 Mar 2011 05:36
Last Modified:09 Jun 2011 08:17

Repository Staff Only: item control page