Oxomethylium, formyl cation; 17O isotopomer
Species tag 030505
Date of EntryFeb. 2004
ContributorH. S. P. Müller

The laboratory and astronomical input data has been summarized in
(1) L. Dore, C. Puzzarini, and G. Cazzoli, 2001, Can. J. Phys., 79, 359.
Predictions for high frequencies should be viewed with some caution.
At low J, it is possible to resolve the 17O hyperfine splitting. Therefore, a separate hyperfine calculation up to J = 5 is provided. Note:The partion function given below takes into account this splitting !
The dipole moment is assumed to agree with that of the main isotopic species, see e029507.cat.

Lines Listed46
Frequency / GHz< 3974
Max. J46
log STR0-5.0
log STR1-6.0
Isotope Corr.-3.425
Egy / (cm–1)0.0
 µa / D3.90
 µb / D 
 µc / D 
 A / MHz 
 B / MHz43528.93
 C / MHz 
detected in ISM/CSMyes

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