H2CNH2+
Aminomethylium
Species tag 030519
Version1*
Date of EntryDec. 2019
ContributorH. S. P. Müller

Rotational as well as rovibrational transition frequencies were reported by
(1) C. R. Markus, S. Thorwirth, O. Asvany, and S. Schlemmer, 2019, Phys. Chem. Chem. Phys. 21, 26406.
Data are limited to Ka = 0 and 1. Therefore, calculations for Ka = 2 should be viewed with some caution, higher ones with considerable caution. Transitions above 500 GHz should also be viewed cautiously.
The dipole moment was taken from a quantum chemical calculation by
(2) R. Thackston and R. C. Fortenberry, 2018 Icarus 299, 187.
At low temperatures, it may be necessary to discern between ortho-H2CNH2+ and para-H2CNH2+. The para states are described by Ka being even, the ortho states by Ka odd. The nuclear spin-weights are 5 and 3 for ortho and para states, respectively.

Lines Listed201
Frequency / GHz< 1000
Max. J17
log STR0-6.7
log STR1-4.3
Isotope Corr.0.0
Egy / cm–10.0
 µa / D0.45
 µb / D 
 µc / D 
 A / MHz151415.
 B / MHz31338.38
 C / MHz25901.93
 Q(300.0)10023.3303
 Q(225.0)6510.9225
 Q(150.0)3546.0502
 Q(75.00)1256.7312
 Q(37.50)446.7171
 Q(18.75)159.8389
 Q(9.375)58.9628
 Q(5.000)25.6446
 Q(2.725)12.7167
detected in ISM/CSMno


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