کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9589478 | 1393806 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The millimeter wave rotational spectrum of lactic acid
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
The results of a comprehensive investigation of the rotational spectrum of lactic acid over the frequency region 171-318Â GHz are reported. Some supersonic expansion measurements at 8-16Â GHz have also been made. A complete set of octic level constants in the asymmetric rotor Hamiltonian has been determined for the ground vibrational state from a fit to over 1000 measured transition frequencies. Spectroscopic constants have also been determined for the first five excited states of the low frequency, 60Â cmâ1, torsional vibrational mode, and for four other vibrationally excited states. Vibrational states become rather crowded above 200Â cmâ1, with seven different states only in the next 100Â cmâ1, and almost all of the measured states in this energy region show evidence of perturbations. The analysis was carried out with the newly developed AABS software package for Assignment and Analysis of Broadband Spectra.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Spectroscopy - Volume 234, Issue 1, November 2005, Pages 106-112
Journal: Journal of Molecular Spectroscopy - Volume 234, Issue 1, November 2005, Pages 106-112
نویسندگان
Lech PszczóÅkowski, Ewa BiaÅkowska-Jaworska, Zbigniew Kisiel,