کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9577928 | 1505200 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Conformational properties of trimethyl phosphate monomer
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Conformational isomerism of trimethylphosphate (TMP) has been studied de novo. TMP monomers were isolated in low temperature xenon matrices at different substrate temperatures and characterized using FTIR spectroscopy. At the lowest temperature, three different conformers, with overall molecular symmetries C3, C1 and Cs, were shown to co-exist in the matrix. Increase of the sample temperature led to conformational cooling, with the two minor conformers being depopulated successively, following an order of increasing stability. Initially, the less stable Cs conformer converted to the C1 form and, at higher temperatures, the C1 conformer converted to the global energy minimum, C3. Interpretation of the experimental data was supported by extensive calculations of the vibrational spectra and barriers to the conformational interconversion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics Letters - Volume 406, Issues 1â3, 23 April 2005, Pages 126-136
Journal: Chemical Physics Letters - Volume 406, Issues 1â3, 23 April 2005, Pages 126-136
نویسندگان
Igor Reva, Alcides Simão, Rui Fausto,