کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1233905 | 968818 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The significance of the temporal bond polarizabilty relaxation of 2- and 3-aminopyridine by 514.5Â nm excitation for the nonresonant Raman virtual states
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: The significance of the temporal bond polarizabilty relaxation of 2- and 3-aminopyridine by 514.5Â nm excitation for the nonresonant Raman virtual states The significance of the temporal bond polarizabilty relaxation of 2- and 3-aminopyridine by 514.5Â nm excitation for the nonresonant Raman virtual states](/preview/png/1233905.png)
چکیده انگلیسی
Our algorithm [B. Tian, G. Wu, G. Liu, J. Chem. Phys. 87 (1987) 7300] is introduced to obtain the temporal bond polarizabilities of 2- and 3-aminopyridine from their Raman intensities, which supply fruitful electronic information of the nonresonant Raman excited virtual states. The study shows that the excited charges tend to flow to the molecular periphery due to electronic repulsion and most of their relaxations show a single exponential decaying behavior, though some are exceptional. The characteristic times corresponding to the relaxations of the peripheral CH and branching CN bond polarizabilities are, in general, shorter than those of the skeletal CC/CN bonds. There is also evidence that only electrons from part of the occupied MO's are excited and contribute to the Raman excited virtual states.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 71, Issue 4, 15 December 2008, Pages 1588-1593
Journal: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy - Volume 71, Issue 4, 15 December 2008, Pages 1588-1593
نویسندگان
Chao Fang, Guozhen Wu,