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نوع الوثيقة : مقال في مجلة دورية 
عنوان الوثيقة :
Potentiometry, Stability and Thermodynamics of Diethyltin(IV) Dichloride with Some Selected Biomolecules
Potentiometry, Stability and Thermodynamics of Diethyltin(IV) Dichloride with Some Selected Biomolecules
 
لغة الوثيقة : الانجليزية 
المستخلص : 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. 
ردمد : 0095-9782 
اسم الدورية : JOURNAL OF SOLUTION CHEMISTRY 
المجلد : 42 
العدد : 11 
سنة النشر : 1434 هـ
2013 م 
نوع المقالة : مقالة علمية 
تاريخ الاضافة على الموقع : Wednesday, July 19, 2017 

الباحثون

اسم الباحث (عربي)اسم الباحث (انجليزي)نوع الباحثالمرتبة العلميةالبريد الالكتروني
M AljahdaliAljahdali, m باحث  
A AbdelkarimAbdelkarim, A باحث  
A El-SherifEl-Sherif, A باحث  

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اسم الملفالنوعالوصف
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