Mixed ligand complexes. Log β, ΔH°, and ΔS° values for the Cu2+–glycine, –alanine, –α-aminoisobutyric acid, and sarcosine systems
- 1 January 1972
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 12,p. 1199-1202
- https://doi.org/10.1039/dt9720001199
Abstract
Values of log β, ΔH°, and ΔS° are reported for mixed-ligand complex formation of Cu2+ with amino-acids in dilute aqueous solution. The reaction Cu2++ A–+ B–= CuAB is characterized for the systems involving glycine, alanine, sarcosine, and aminoisobutyric acid as ligands. The thermochemical results are discussed in terms of a statistical model and it is shown that the enhancement factor term applied to mixed-ligand formation constants does not necessarily arise from the entropy term.Keywords
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