کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9770081 | 1501939 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Vibrational and NMR spectra of alkali metal salts of 3-amino-, 3-hydroxy- and 3-halogenobenzoic acids
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The alkali metal series (LiâNaâKâRbâCs) of 3-amino-, 3-hydroxy- and 3-halogenobenzoates were studied. The FT-IR and FT-Raman spectra of lithium, sodium, potassium, rubidium and cesium salts were recorded, assigned, analyzed and compared. The electronic and NMR (1H and 13C) spectra were recorded and analyzed too. The wavenumbers of the bands are different in the series LiâCs in the case of all studied acids. The influence of various substituents: amino, hydroxyl and halogen groups on the electronic charge distribution in studied compounds were investigated. The wavenumbers of the aromatic ring bands change toward the series of studied substituents. Most of them increase in the series IâNH2âOH (18a in IR and Raman spectra, 18b in IR spectra, 19a and 6a in IR spectra). The magnitudes of separation between wavenumbers due to asymmetrical and symmetrical stretching vibration of COOâ group increases in the series HâNH2âIâOH for potassium, sodium and rubidium.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volumes 744â747, 3 June 2005, Pages 353-361
Journal: Journal of Molecular Structure - Volumes 744â747, 3 June 2005, Pages 353-361
نویسندگان
E. Regulska, M. Samsonowicz, R. ÅwisÅocka, W. Lewandowski,