DC18O+
Oxomethylium; 18O and deuterium doubly substituted isotopomer
Species tag 032505
Version1*
Date of EntryOct. 2005
ContributorH. S. P. Müller

The laboratory data has been reported in
(1) P. Caselli and L. Dore, 2005, Astron. Astrophys., 433, 1145.
In contrast to earlier work, (1) seems to have avoided frequency shifts due to ion drift.
At low J, it may be possible to resolve the D hyperfine splitting. It is essentially the same as that of DCO+, see e30510.cat.
The dipole moment is assumed to agree with that of the main isotopic species, see e029507.cat.
Lines Listed47
Frequency / GHz< 3215
Max. J47
log STR0-5.0
log STR1-5.0
Isotope Corr.-6.632
Egy / (cm–1)0.0
 µa / D3.90
 µb / D 
 µc / D 
 A / MHz 
 B / MHz34413.79
 C / MHz 
 Q(300.0)182.0724
 Q(225.0)136.6196
 Q(150.0)91.1791
 Q(75.00)45.7513
 Q(37.50)23.0430
 Q(18.75)11.6923
 Q(9.375)6.0219
 Q(5.000)3.3843
 Q(2.725)2.0293
detected in ISM/CSMno

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