The line list was extended by data from two additional sources with respect to the first entry from Oct. 2001. The experimental lines were taken from
(1) S. Saito, 1976, Chem. Phys. Lett. 42, 399;
from
(2) M. Rodler, PhD thesis, 1983, Eidgenössische Technische Hochschule, Zürich, Switzerland;
from
(3) B. M. Hays, N. Wehres, B. Alligood DePrince, A. A. M. Roy, J. C. Laas, S. L. Widicus Weaver, 2015, Chem. Phys. Lett. 630, 18;
and from
(4) M. Melosso, B. A. McGuire, F. Tamassia, C. Degli Esposti, L. Dore, 2019, ACS Earth Space Chem. 3, 1189.
The attributed uncertainties differ slightly from those in (4) and from the previous CDMS entry. Three lines were omitted from (1), and 70 kHz were used as uncertainties as earlier. After omission of one line from (2), the uncertainties were altered to 10 kHz from 20. Uncertainties of 70 and 80 kHz were employed for data from (3), whereas those from (4) were retained at 15 kHz. The calculated spectrum should be sufficient for all astronomical observations. Caution is advised for frequencies with calculated uncertainties exceeding 0.2 MHz.
The syn form is the lowest energy form of vinyl alcohol. See also e044507.cat.
The dipole moment was taken from (1).