Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Vibrational spectrum of perfluoroethane. / Golubkova, O. S.; Bocharov, V. N.; Burtsev, A. P.; Shchepkin, D. N.
в: Optics and Spectroscopy (English translation of Optika i Spektroskopiya), Том 111, № 3, 01.09.2011, стр. 357-366.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
}
TY - JOUR
T1 - Vibrational spectrum of perfluoroethane
AU - Golubkova, O. S.
AU - Bocharov, V. N.
AU - Burtsev, A. P.
AU - Shchepkin, D. N.
PY - 2011/9/1
Y1 - 2011/9/1
N2 - We have obtained IR absorption spectra of a C2F6 gas and a C2F6 cryosolution in Xe (T = 163 K) in the fundamental and overtone ranges. We have interpreted 28 bands of 12C12CF6 and three bands of 13C 12CF6. In the spectral ranges that correspond to vibrations that are combinations with ?1, ?7, and ? 5, we observe multiplets, which we attribute to interactions of the type of Fermi resonances between the states ?1(A1g) ∼ ?6(A1g), ?7(Eg) ∼ ?6 + ? 11(Eg) ∼ 2?8(Eg), ? 5(A2u) ∼ ?8 + ?11(A 2u). We reveal an anomalous intensity distribution in the spectrum of an asymmetric isotopologue. For the basic and isotopic configurations of per- fluoroethane, we calculate the coefficients of shapes of vibrations and the intensities of absorption bands. We reveal that the behavior of the groups 12CF3 and 13CF3 is indifferent to the excitation of doubly degenerate stretching vibrations ?7(E g) and ?10(Eu).
AB - We have obtained IR absorption spectra of a C2F6 gas and a C2F6 cryosolution in Xe (T = 163 K) in the fundamental and overtone ranges. We have interpreted 28 bands of 12C12CF6 and three bands of 13C 12CF6. In the spectral ranges that correspond to vibrations that are combinations with ?1, ?7, and ? 5, we observe multiplets, which we attribute to interactions of the type of Fermi resonances between the states ?1(A1g) ∼ ?6(A1g), ?7(Eg) ∼ ?6 + ? 11(Eg) ∼ 2?8(Eg), ? 5(A2u) ∼ ?8 + ?11(A 2u). We reveal an anomalous intensity distribution in the spectrum of an asymmetric isotopologue. For the basic and isotopic configurations of per- fluoroethane, we calculate the coefficients of shapes of vibrations and the intensities of absorption bands. We reveal that the behavior of the groups 12CF3 and 13CF3 is indifferent to the excitation of doubly degenerate stretching vibrations ?7(E g) and ?10(Eu).
UR - http://www.scopus.com/inward/record.url?scp=83155167636&partnerID=8YFLogxK
U2 - 10.1134/S0030400X11090098
DO - 10.1134/S0030400X11090098
M3 - Article
AN - SCOPUS:83155167636
VL - 111
SP - 357
EP - 366
JO - OPTICS AND SPECTROSCOPY
JF - OPTICS AND SPECTROSCOPY
SN - 0030-400X
IS - 3
ER -
ID: 49683430