کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9633538 | 1426346 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Potentiometric investigations of molecular heteroconjugation equilibria of substituted phenol + n-butylamine systems in dimethyl sulfoxide
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Potentiometric investigations of molecular heteroconjugation equilibria of substituted phenol + n-butylamine systems in dimethyl sulfoxide Potentiometric investigations of molecular heteroconjugation equilibria of substituted phenol + n-butylamine systems in dimethyl sulfoxide](/preview/png/9633538.png)
چکیده انگلیسی
Molecular heteroconjugation constants, KBHADMSO and KAHBDMSO, expressed as their logarithms, have been determined by potentiometric titration for eleven substituted phenol + n-butylamine systems in a polar protophilic aprotic solvent, dimethyl sulfoxide (DMSO). An increasing tendency towards molecular heteroconjugation in these systems without proton transfer has been found with increasing pKaDMSO (HA), i.e., with decreasing phenol acidity. Moreover, a linear correlation has been established between the determined lgKBHADMSO values and pKaDMSO (HA). Furthermore, overall stability constants, lgKoDMSO, could be correlated linearly with pKaDMSO (HA) values.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Chemical Thermodynamics - Volume 37, Issue 8, August 2005, Pages 778-782
Journal: The Journal of Chemical Thermodynamics - Volume 37, Issue 8, August 2005, Pages 778-782
نویسندگان
MaÅgorzata Czaja, Katarzyna BagiÅska, Anna Kozak, Mariusz Makowski, Lech ChmurzyÅski,