Formation constants of the silver(I) complexes with some amino-alcohols have been determined at 25°C in 0.5 M KNO3 by means of two independent potentiometric measurements employing glass and silver electrode. The ligands considered are: sec-butylamine, 2-amino-l-propanol, 2-amino-l-methoxy-propane, 2-amino-2-methyl-l-propanol, 2- amino-l-butanol, 2-amino-l-pentanol, 2-amino-l-hexanol, 2-amino-l,3-propanediol, 2-amino-l,3-hexandiol, 2-amino- 2-methyl-l,3-propanediol and Tris(hydroxymethyl)-aminomethane. Protonation constants of the selected ligands have also been determined. Calculations were made using HYPERQUAD computer program. The influence exerted by the introduction of hydroxy groups and by the presence of alkyl residuals in the ligand structure on the formation equilibria, is discussed.
Protonation and silver(I) complex-formation equilibria of some amino-alcohols / Canepari, Silvia; Carunchio, Vincenzo Tito; P., Castellano; Messina, Antonella. - In: TALANTA. - ISSN 0039-9140. - STAMPA. - 44:11(1997), pp. 2059-2067. [10.1016/s0039-9140(97)00044-1]
Protonation and silver(I) complex-formation equilibria of some amino-alcohols
CANEPARI, Silvia;CARUNCHIO, Vincenzo Tito;MESSINA, Antonella
1997
Abstract
Formation constants of the silver(I) complexes with some amino-alcohols have been determined at 25°C in 0.5 M KNO3 by means of two independent potentiometric measurements employing glass and silver electrode. The ligands considered are: sec-butylamine, 2-amino-l-propanol, 2-amino-l-methoxy-propane, 2-amino-2-methyl-l-propanol, 2- amino-l-butanol, 2-amino-l-pentanol, 2-amino-l-hexanol, 2-amino-l,3-propanediol, 2-amino-l,3-hexandiol, 2-amino- 2-methyl-l,3-propanediol and Tris(hydroxymethyl)-aminomethane. Protonation constants of the selected ligands have also been determined. Calculations were made using HYPERQUAD computer program. The influence exerted by the introduction of hydroxy groups and by the presence of alkyl residuals in the ligand structure on the formation equilibria, is discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.