The torsional fundamental band and high-J rotational spectra of the ground, first and second excited torsional states of acetone; Journal of Molecular Spectroscopy; Vol. 363

The torsional fundamental band and high-J rotational spectra of the ground, first and second excited torsional states of acetone; Journal of Molecular Spectroscopy; Vol. 363

Bibliographic Details
Parent link:Journal of Molecular Spectroscopy
Vol. 363.— 2019.— [111169, 9 p.]
Corporate Author: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Other Authors: lyushin V. V. Vadim Vadimovich, Armieieva I., Dorovskaya O. A. Olga Anatoljevna, Krapivin I. S. Igor, Alekseev E. A. Evgeny Anatoljevich, Tudorie M. Marcela, Motienko R. A., Margules L. D. Laurent, Pirali O. Olivier, Bekhtereva E. S. Elena Sergeevna, Bauerekker (Bauerekker) Z. Kh. Zigurd Khermann, Sydow Ch. Christian, Drouin B. J. Brian
Summary:Title screen
We present a new global study of the millimeter, submillimeter and far-infrared (FIR) spectra involving the three lowest torsional states of acetone ((CH3)2CO). New microwave measurements have been carried out between 34 and 940 GHz using spectrometers in IRA NASU (Ukraine), and PhLAM Lille (France). The FIR spectrum of acetone has been recorded on the AILES beamline of the SOLEIL synchrotron facility. The new data involving torsion-rotation transitions with J up to 90 and Ka up to 52 were combined with previously published measurements and analyzed using a model developed recently to study the high resolution spectra of molecules with two equivalent methyl rotors and C2v symmetry at equilibrium (PAM_C2v_2tops program). The final fit included 117 parameters to give an overall weighted root-mean-square deviation of 0.85 for the dataset consisting of 29,584 microwave and 1116 FIR line frequencies belonging, respectively, to the three lowest torsional states (ν12,ν17) = (0,0), (1,0), (0,1) and to the observed fundamental band associated with the methyl-top torsion mode (ν12,ν17) = (0,1) ← (0,0). The high values of rotational quantum numbers involved in this study provide an opportunity to test the performance of the PAM_C2v_2tops program approach for the case of highly excited rotational states.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2019
Subjects:
электронный ресурс
труды учёных ТПУ
acetone
microwave spectrum
torsional fundamental band
methyl top internal rotation
ацетон
СВЧ
торсионные поля
Online Access:https://doi.org/10.1016/j.jms.2019.06.008
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=663288

Similar Items

Similar Items