Summary
The heat of reaction of the anion of furan-2-carboxylic acid with cobalt(II), nickel(II) and copper(II) cations has been determined by direct calorimetry. By means of the equilibrium constants, Gibbs function and entropy were also obtained. The measurements were carried out in aqueous medium at 25 °C and an ionic strength I=1 mol dm−3 (NaNO3). The data obtained seem to indicate a bidentate character of this ligand, with the participation of both carboxylate and heterocyclic oxygen in complex formation. The behaviour of furan oxygen towards 3d metals is compared with that of thiophen sulfur and pyrrole nitrogen.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
R. Aruga,Aust. J. Chem., 32, 709 (1979).
R. Aruga,Aust. J. Chem., 34, 501 (1981).
P. Lumme,Suom. Kemistil., 33B, 87 (1960).
P. Lumme and K. Ponkala,Suom. Kemistil., 45B, 52 (1972).
H. Erlenmeyer, R. Griesser, B. Prijs and H. Siegel,Helv. Chim. Acta, 51, 339 (1968).
R. Aruga,J. Inorg. Nucl. Chem., 39, 2159 (1977).
R. Aruga,J. Inorg. Nucl. Chem., 40, 1077 (1978).
G. H. Nancollas,Interactions in Electrolyte Solutions, Elsevier, Amsterdam, 1966.
R. Aruga,Atti Accad. Scienze Torino, 109, 361 (1974–75).
R. Aruga,Annali Chim. (Rome), 64, 659 (1974).
P. Lumme, K. Ponkala and K. Nieminen,Suom. Kemistil., 45B, 170 (1972).
L. G. Sillén,Acta Chem. Scand., 16, 159 (1962).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Aruga, R. Equilibria in aqueous solution of cobalt(II), nickel(II) and copper(II) cations with furan-2-carboxylate. A calorimetric study. Transition Met Chem 7, 318–320 (1982). https://doi.org/10.1007/BF00618341
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00618341