Oxomethylium; 13C and deuterium doubly substituted isotopomer
Species tag 031508
Date of EntryOct. 2007
ContributorH. S. P. Müller

The laboratory data has been reported in
(1) P. Caselli and L. Dore, 2005, Astron. Astrophys., 433, 1145.
With respect to the Oct. 2005 entry, additional high-J data was used. It was taken from
(2) V. Lattanzi, A. Walters, B. J. Drouin, and J. C. Pearson, 2007, Astrophys. J., 662, 771.
In contrast to earlier work, (1) and (2) seem to have avoided frequency shifts due to ion drift.
Predictions beyond 2 THz should be viewed with caution.
At low J, it may be possible to resolve the D hyperfine splitting. It is quite similar to that of DCO+, see e30510.cat.
The dipole moment is assumed to agree with that of the main isotopic species, see e029507.cat.

Lines Listed48
Frequency / GHz< 3372
Max. J48
log STR0-5.0
log STR1-5.3
Isotope Corr.-5.911
Egy / (cm–1)0.0
 µa / D3.90
 µb / D 
 µc / D 
 A / MHz 
 B / MHz35366.71
 C / MHz 
detected in ISM/CSMyes

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