oa South African Journal of Chemistry - Diorganotin(IV) complexes with methionine methyl ester. Equilibria and displacement by DNA constituents : research article
|Article Title||Diorganotin(IV) complexes with methionine methyl ester. Equilibria and displacement by DNA constituents : research article|
|© Publisher:||South African Chemical Institute (SACI)|
|Journal||South African Journal of Chemistry|
|Affiliations||1 Islamic University, Saudi Arabia, 2 Cairo University, Egypt and 3 Cairo University, Egypt|
|Publication Date||Jan 2014|
|Pages||94 - 98|
|Keyword(s)||Dibutyltin(IV), Dimethyltin(IV), Diphenyltin(IV), Methionine methyl ester and Stability constant|
The coordination of methionine methyl ester with dimethyltin(IV) (DMT), dibutyltin(IV) (DBT) and diphenyltin(IV) (DPT) was investigated at 25 °C and 0.1 mol dm-3 ionic strength in water for dimethyltin(IV) and in 50 % dioxane-water mixture for dibutyltin(IV) and diphenyltin(IV). Methionine methyl ester forms 1:1 and 1:2 complexes with diorganotin(IV). The corresponding formation constants were calculated by using the non-linear least-squares program MINIQUAD-75. The concentration distribution of the various complex species was evaluated as a function of pH. The displacement of coordinated methionine methyl ester with some DNA constituents was calculated based on equilibrium aspects.
Article metrics loading...