CH3COOH, vt = 0
Acetic acid, vt = 0
Species tag 060523
Version1*
Date of EntryMay 2019
ContributorV. V. Ilyushin

Data involving vt ≤ 2 were subjected to a combined fit. The experimental data were summarized by
(1) V. V. Ilyushin, C. P. Endres, and F. Lewen, S. Schlemmer, and B. J. Drouin, 2013, J. Mol. Spectrosc. 290, 31.
The majority of the (mostly) submillimeter data are from that work. They were supplemented by additional data from
(2) V. V. Ilyushin, E. A. Alekseev, S. F. Dyubko, and I. Kleiner, 2003, J. Mol. Spectrosc. 220, 170;
from
(3) V. V. Ilyushin, E. A. Alekseev, S. F. Dyubko, S. V. Podnos, I. Kleiner, L. Margulès, G. Wlodarczak, J. Demaison, J. Cosleou, B. Mate, E. N. Karyakin, G. Yu. Golubiatnikov, G. T. Fraser, R. D. Suenram, and J. T. Hougen, 2001, J. Mol. Spectrosc. 205, 286;
from
(4) B. P. van Eijck and F. B. van Duijneveldt, 1983, J. Mol. Spectrosc. 102, 273;
from
(5) J. Demaison, A. Dubrulle, D. Boucher, J. Burie, and B. P. van Eijck, 1982, J. Mol. Spectrosc. 94, 211;
from
(6) G. Wlodarczak and J. Demaison, 1988, Astron. Astrophys. 192, 313;
from
(7) B. P. van Eijck, J. van Opheusden, M. M. M. van Schaik, E. van Zoeren, 1981, J. Mol. Spectrosc. 86, 465;
and from
(8) L. C. Krisher and E. Saegebarth, 1971, J. Chem. Phys. 54, 4553.
The majority of the data within vt = 0 are from (1). Additional data are from (3), (5), (6), (7), and (8). The calculations should be reliable throughout because of the very large quantum number coverage and because of limiting the calculations to transition frequencies with calculated uncertainties below 0.1 MHz.
Please note: the fifth quantum number is not a standard quantum number. It designated the symmetry of the methyl internal rotor: 0 is E, 1 is A1, 2 is A2.
The partition function takes into account torsional states up to vt = 8.
The ground state dipole moment components were determined in (8).

Lines Listed73039
Frequency / GHz< 1000
Max. J80
log STR0-15.0
log STR1-9.0
Isotope Corr.-0.0
Egy / (cm–1)0.0
 µa / D0.86
 µb / D1.47
 µc / D 
 A / MHz11324.236
 B / MHz9494.193
 C / MHz5326.132
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detected in ISM/CSMyes


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