Hydroxymethylium, protonated formaldehyde; 13C isotopic species
Species tag 032506
Date of EntryOct. 2006
ContributorH. S. P. Müller

The experimental data were reported by
(1) L. Dore, G. Cazzoli, S. Civis, and F. Scappini, 1997, J. Mol. Spectrosc. 183, 107.
The experimental data cover a very small quantum number range. Predictions with uncertainties larger than about 1 MHz should be viewed with caution. Moreover, estimated uncertainties for b-type transitions are too small for Ka > 1 – 0 because DK had to be kept fixed.
The dipole moment was assumed to agree with that of the main species, see e031504.cat.

Lines Listed1500
Frequency / GHz< 2500
Max. J37
log STR0-6.5
log STR1-4.3
Isotope Corr.-1.972
Egy / cm–10.0
 µa / D1.387
 µb / D1.776
 µc / D 
 A / MHz197563.5
 B / MHz33378.7
 C / MHz28468.2
detected in ISM/CSMno

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