Formaldehyde, 13C isotopic species
Species tag 031503
Date of EntryMay 2000
ContributorH. S. P. Müller

The experimental data was summarized by
(1) H. S. P. Müller, R. Gendriesch, L. Margulès, F. Lewen, G. Winnewisser, R. Bocquet, J. Demaison, U. Wötzel, and H. Mäder, 2000, Phys. Chem. Chem. Phys. 2, 3401.
At low temperatures, it may be necessary to discern between ortho-H213CO and para-H213CO. The ortho states are described by Ka odd, the para states by Ka even. The nuclear spin-weights are 3 and 1 for ortho-H213CO and para-H213CO, respectively. The JKaKc = 111 is the lowest ortho state. It is 10.5135 cm–1 above ground.
The dipole moment was measured by
(2) B. Fabricant, D. Krieger, and J. S. Muenter, 1977, J. Chem. Phys. 67, 1576.

Lines Listed2309
Frequency / GHz< 3500
Max. J52
log STR0-14.0
log STR1-9.5
Isotope Corr.-1.972
Egy / cm–10.0
 µa / D2.3319
 µb / D 
 µc / D 
 A / MHz281993.04
 B / MHz37809.107
 C / MHz33215.941
detected in ISM/CSMyes

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