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Complex formation equilibria of some β-amino-alcohols with lead(II) and cadmium(II) in aqueous solution |
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| Authors: | Silvia Canepari Vincenzo Carunchio Paola Castellano Antonella Messina |
| Institution: | a CIMS-Bioanalytical Chemistry Section, University of Rome ‘La Sapienza', P. le Aldo Moro, 5-00185 Rome, Italy b Department of Chemistry, University of Rome ‘La Sapienza', P. le Aldo Moro, 5-00185 Rome, Italy |
| Abstract: | A study of complex formation equilibria of some β-amino-alcohols with lead(II) and cadmium(II) ions at 25°C and in 0.5 M KNO3 is reported. The amino-alcohols considered are 2-amino-1-propanol, 2-amino-1-butanol, 2-amino-1-pentanol and 2-amino-1,3-propanediol. sec-Buthylamine and 2-amino-1-methoxy-propane have been also considered for comparison. The results are discussed in terms of ligand structure, paying attention to the number of hydroxyl groups and to the length of the alkyl residual. A weak contribution of the alcoholic oxygen in the coordination of cadmium(II) and the presence of a mixed hydroxyl species in lead(II) containing systems are hypothesized. |
| Keywords: | β-Amino-alcohols Complex formation equilibria Lead(II) Cadmium(II) |
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