H2CCNH
Etheneimine
Species tag 041503
Version1*
Date of EntryJune 2006
ContributorH. S. P. Müller

The observed transition frequencies were taken from
(1) M. Rodler, R. D. Brown, P. D. Godfrey, and L. M. Tack, 1984, Chem. Phys. Lett. 110, 447;
and from
(2) M. Rodler, R. D. Brown, P. D. Godfrey, and B. Kleibömer, 1986, J. Mol. Spectrosc. 118, 267.
The dipole moment was reported in (1).
Because of the small data set, predictions of transitions with uncertainties exceeding 300 kHz should be viewed with some caution, those with uncertainties larger than 1 MHz should be viewed with great caution.
At lower frequencies, 14N hyperfine splitting may be resolvable. Moreover, at high resolution, even a small tunneling splitting of about 120 kHz may be observable. A 3 : 1 intensity ratio due to spin-statistics has to be considered if the tunneling splitting is resolved. If only hyperfine splitting is resolved spin-statistics can be ignored. Therefore, a separate calculation with hyperfine splitting and tunneling has been provided. The partition function in parentheses applies to this entry.

Lines Listed2740
Frequency / GHz< 2500
Max. J69
log STR0-7.7
log STR1-5.0
Isotope Corr.-0.0
Egy / cm–10.0
 µa / D0.434
 µb / D 
 µc / D1.371
 A / MHz201443.7
 B / MHz9663.14
 C / MHz9470.12
 Q(300.0)6466.6694 (77599.9958)
 Q(225.0)4199.0259 (50388.3097)
 Q(150.0)2285.3974 (27424.7689)
 Q(75.00)808.4617 (9701.5406)
 Q(37.50)286.3468 (3436.1612)
 Q(18.75)101.6365 (1219.6376)
 Q(9.375)36.2283 (434.7395)
detected in ISM/CSMpossibly


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