کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5415569 | 1506769 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ro-vibrational analysis of the ν9 and ν16 bands of R152a
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
High-resolution Fourier transform infrared (HR-FTIR) spectra of R152a (CH3CHF2) at room temperature were recorded at an unapodized resolution of 0.0019 cmâ1, and the fundamental bands ν9 (868.7 cmâ1) and ν16 (941.7 cmâ1) analysed. Transitions were assigned with the aid of Loomis-Wood plots and data fitted with Pickett's SPFIT. The a-type ν9 band is essentially unaffected by resonances, whilst the b-type ν16 band shows distinct avoided crossings affecting a number of levels. These perturbations have been treated by explicit inclusion of interacting “dark” states with suitable Coriolis parameters in the fit of ν16 transitions. Rotational levels of Ï
16 = 1 in the vicinity of Kc = 17 are perturbed via an a-axis Coriolis resonance with a state originating at 937.9 cmâ1, identified as Ï
11 = 2. The levels around Kc = 47 are perturbed by a b-axis Coriolis resonance with the combination state Ï
10Â =Â 1; Ï
17Â =Â 1 at 951.6Â cmâ1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Spectroscopy - Volume 251, Issues 1â2, SeptemberâOctober 2008, Pages 256-260
Journal: Journal of Molecular Spectroscopy - Volume 251, Issues 1â2, SeptemberâOctober 2008, Pages 256-260
نویسندگان
Tarekegn Chimdi, Evan G. Robertson, Ljiljana Puskar, Christopher D. Thompson, Mark J. Tobin, Don McNaughton,