HDC18O
Formaldehyde, singly deuterated isotopolog with 18O
Species tag 033510
Version1*
Date of EntryJan. 2016
ContributorH. S. P. Müller

The experimental frequencies have been reported by
(1) O. Zakharenko, R. A. Motiyenko, L. Margulès, and T. R. Huet, 2015, J. Mol. Spectrosc. 317, 41.
Some higher order parameters were estimated from HDCO parameters essentially from that work. The reported uncertainties appear to be too conservative.
The predictions may be sufficiently accurate for all astronomical purposes. Predictions with uncertainties larger than 0.3 MHz should be viewed with caution.
Because of the lower symmetry of HDC18O with respect to the main isotopic species, spin-statistics do not have to be considered !
The dipole moment was assumed to agree with that of HDCO, see e031501.cat.

Lines Listed1747
Frequency / GHz< 2000
Max. J35
log STR0-7.0
log STR1-6.0
Isotope Corr.-6.511
Egy / cm–10.0
 µa / D2.330
 µb / D0.195
 µc / D 
 A / MHz198003.9
 B / MHz33139.76
 C / MHz28281.23
 Q(300.0)2041.6401
 Q(225.0)1325.9217
 Q(150.0)722.0154
 Q(75.00)255.8844
 Q(37.50)90.9916
 Q(18.75)32.5611
 Q(9.375)11.8007
 Q(5.000)4.8576
 Q(2.725)2.3519
detected in ISM/CSMno


Database maintained by Holger S. P. Müller and Sven Thorwirth, programming by D. Roth and F. Schloeder