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Thermodynamics of ionic interactions in aqueous solutions—I. stability of magnesium benzyl malonate complex

✍ Scribed by S. Parthasarathy; S. Ambujavalli


Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
431 KB
Volume
17
Category
Article
ISSN
0013-4686

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✦ Synopsis


Thermodynamic stability constants of 1: 1 Mga+ complexes with benzyl malonate ion at three different temperatures by the potentiometric method are reported, and the free energy, enthalpy and entropy changes accompanying association calculated. The influence of the heavy aromatic substituent in the l&and molecule on the stability of the complex is discussed by comparison with the Mgs+ malonate complex. R&sum&D&termination potentiombtrique a trois temperatures des constantes de stabilite therrnodynamique des complexes 1-I de Mg*+ avec l'ion malonate de benzyle et calcul des variations d'bnergie, d'enthalpie et d'entropie accompagnant l'association. L'influence du substituant aromatique lourd dans le coordinat sur la stabilite du complexe est discut& par comparaison avec le complexe (Mga+-malonate). Zusamnxdkssung-B wurden die thermodynamischen Stabilit&skonstantenten von 1: 1 Mg'+/Benzylmalonat-Komplexen bei drei verschiedenen Temperaturen mit Hilfe der potentiometrischen Methode bestimmt. Daraus wurden die Aenderung der freien Energie, der Enthalpie und der Entropie bei der Assoziation berechnet . Der Einfluss des schweren aromatischen Substituenten im Ligandmolekiil auf die Stabilitiit des Komplexes wird im Vergleich zum Mg*+-Malonat-Komplex diskutiert.


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