Thermodynamical study on theformation of some mixed ligand complexes of non-transition metal ions in solution pt. 2:thermodynamics of hy drophobic interaction between ligands in some cadmium (Ⅱ)-2,2'-bipyridyl(1,10- phenanthroline)-aminoacids ternary com

Acta Chimica Sinica ›› 1993, Vol. 51 ›› Issue (7): 646-651. Previous Articles Next Articles

Original Articles

溶液中非过渡金属混合配体配合物形成的热力学研究2:某些镉(Ⅱ)-联吡啶(邻菲咯啉)-氨基酸混配配合物中配体间疏水缔合作用的热力学

高恩君;王魁;刘祁涛

沈阳化工学院精细化工系;辽阳石油化工专科学校化工系;辽宁大学化学系

发布日期:1993-07-15

Thermodynamical study on theformation of some mixed ligand complexes of non-transition metal ions in solution pt. 2:thermodynamics of hy drophobic interaction between ligands in some cadmium (Ⅱ)-2,2'-bipyridyl(1,10- phenanthroline)-aminoacids ternary com

GAO ENJUN;WANG KUI;LIU QITAO

Published:1993-07-15

Abstract

The stability constants of the complexes of type CdA, CdA2, CdL and CdL2, and the mixed-ligands complexes of type CdLA were studied by potentiometric pH titration technique at ionic strength I = 0.10 (KNO3) at temperature 15, 25, 35 and 45? resp., (where L = 2, 2'-bipyridyl (bipy), or 1,10-phenanthroline (phen); A = alanine (ala), leucine (leu), phenylalanine (phe), and tryptophan (trp). The thermodn. functions for the reactions of formation were calculated by the temperature coefficient method. The results show that the hydrophobic interaction between ligands obviously presents in those ternary complexes containing leu., phe. and trp., and gradually intensifies along this order, and that the principal driving force of the hydrophobic interaction more entropy than enthalpy dependent.

Key words: AMINO ACID, TRYPTOPHAN, LEUCINE, PHENYLALANINE, THERMODYNAMIC FUNCTION, ALANINE, PHENANTHROLINE P, BIPYRIDINE P, CADMIUM COMPLEX

CLC Number:

O642

Cite this article

GAO ENJUN;WANG KUI;LIU QITAO. Thermodynamical study on theformation of some mixed ligand complexes of non-transition metal ions in solution pt. 2:thermodynamics of hy drophobic interaction between ligands in some cadmium (Ⅱ)-2,2'-bipyridyl(1,10- phenanthroline)-aminoacids ternary com[J]. Acta Chimica Sinica, 1993, 51(7): 646-651.

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溶液中非过渡金属混合配体配合物形成的热力学研究2:某些镉(Ⅱ)-联吡啶(邻菲咯啉)-氨基酸混配配合物中配体间疏水缔合作用的热力学

Thermodynamical study on theformation of some mixed ligand complexes of non-transition metal ions in solution pt. 2:thermodynamics of hy drophobic interaction between ligands in some cadmium (Ⅱ)-2,2'-bipyridyl(1,10- phenanthroline)-aminoacids ternary com

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