کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1405516 1501790 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Complexation of the lithium cation with beauvericin: Experimental and DFT study
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Complexation of the lithium cation with beauvericin: Experimental and DFT study
چکیده انگلیسی

From extraction experiments and γ-activity measurements, the extraction constant corresponding to the equilibrium Li+(aq) + 1·Na+(nb) ⇆ 1·Li+(nb) + Na+(aq) taking place in the two-phase water–nitrobenzene system (1 = beauvericin; aq = aqueous phase, nb = nitrobenzene phase) was evaluated as log Kex (Li+, 1·Na+) = 0.5 ± 0.1. Further, the stability constant of the 1·Li+ complex in nitrobenzene saturated with water was calculated for a temperature of 25 °C as log βnb (1·Li+) = 5.6 ± 0.2. By using DFT calculations, the most probable structures of the non-hydrated 1·Li+ and hydrated 1·Li+·3H2O complex species were predicted.


► Water-LiCl–nitrobenzene-beauvericin-dicarbollide system was investigated.
► Stability constant of the Li+⋅beauvericin complex in nitrobenzene was determined.
► Quantum mechanical DFT calculations were carried out.
► Structures of the beauvericin⋅Li+ and beauvericin Li+⋅3H2O complexes were predicted.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volume 1024, 26 September 2012, Pages 142–145
نویسندگان
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