(c-C3H2)CH2 (C4H4)
Methylenecyclopropene
Species tag 052507
Version1
Date of EntryJune 2004
ContributorH. S. P. Müller

The transition frequencies were taken from
(1) T. D. Norden,S. W. Staley, W. H. Taylor, and M. D. Harmony, 1986, J. Am. Chem. Soc. 108, 7912;
and from
(2) M. Bogey, M. Cordonnier, J.-L. Destomes, J.-M. Denis, J.-C. Guillemin, 1991, J. Mol. Spectrosc. 149, 230.
The dipole moment is from (1).
Spin-statistical weight ratios of 5 : 3 for levels having Ka even and odd, respectively, have been taken into account.

Lines Listed5020
Frequency / GHz< 1151
Max. J96
log STR0-8.7
log STR1-5.7
Isotope Corr.-0.0
Egy / cm-10.0
 µa / D1.90
 µb / D 
 µc / D 
 A / MHz29286.3
 B / MHz7154.48
 C / MHz5744.27
 Q(300.0)101149.2802
 Q(225.0)65685.6780
 Q(150.0)35751.4998
 Q(75.00)12644.0842
 Q(37.50)4475.1877
 Q(18.75)1585.9942
 Q(9.375)563.4837
detected in ISM/CSMno


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