Binary and ternary complexes of copper(II) involving imidazole, histamine, and L-histidine as ligands
- 1 January 1980
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 8,p. 1312-1316
- https://doi.org/10.1039/dt9800001312
Abstract
The complete species distribution and stability constants of the binary and ternary complexes of CuII with imidazole, histamine, and L-histidine as ligands were determined from pH titration data in aqueous perchlorate medium at I= 0.15 mol dm–3(Na[ClO4]) and 37 °C. The results show that imidazole, though a unidentate ligand, forms very stable binary and ternary complexes with CuII. The stability-constant data for the CuAH and CuA2H complexes (A = histamine or histidine) suggest that their structures are similar. The ambidentate nature of the histidine ligand i.e. the ability to co-ordinate both in histamine-like and glycine-like modes is indicated from the results obtained.Keywords
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