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Document Details
Document Type
:
Article In Journal
Document Title
:
Potentiometry, Stability and Thermodynamics of Diethyltin(IV) Dichloride with Some Selected Biomolecules
Potentiometry, Stability and Thermodynamics of Diethyltin(IV) Dichloride with Some Selected Biomolecules
Document Language
:
English
Abstract
:
The interaction of diethyltin(IV), DET, with selected bioligands having a variety of model functional groups was investigated at 25 A degrees C and ionic strength 0.1 mol center dot dm(-3) NaCl using the potentiometric technique. The hydrolysis constants of the DET cation and the formation constants of the complexes formed in solution were calculated using the MINIQUAD-75 program. The stoichiometry and stability constants for the complexes formed are reported. The results show the formation of 1:1 and 1:2 complexes with amino acids and DNA constituents. The dicarboxylic acids form 1:1 complexes. The peptides form both 110 complexes and the corresponding deprotonated amide species [Et2Sn(LH-1)] (11-1). The participation of different ligand functional groups in binding to organotin is discussed. The concentration distributions of the various complex species were evaluated as a function of pH. The standard thermodynamic parameters Delta HA degrees and Delta SA degrees, calculated from the temperature dependence of the equilibrium constants, were investigated for the interaction of DET with thymine as a representative example of DNA constituents. The effect of ionic strength and solvent on hydrolysis constants of DET, protonation equilibria of thymine and its complex formation with DET were investigated and discussed.
ISSN
:
0095-9782
Journal Name
:
JOURNAL OF SOLUTION CHEMISTRY
Volume
:
42
Issue Number
:
11
Publishing Year
:
1434 AH
2013 AD
Article Type
:
Article
Added Date
:
Wednesday, July 19, 2017
Researchers
Researcher Name (Arabic)
Researcher Name (English)
Researcher Type
Dr Grade
Email
M Aljahdali
Aljahdali, m
Researcher
A Abdelkarim
Abdelkarim, A
Researcher
A El-Sherif
El-Sherif, A
Researcher
Files
File Name
Type
Description
42107.pdf
pdf
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