l-C3D2
Propadienylidene, doubly-deuterated isotopolog
Species tag 040515
Version1*
Date of EntryMay 2014
ContributorH. S. P. Müller

The experimental data were reported by
(1) C. A. Gottlieb, T. C. Killian, P. Thaddeus, P. Botschwina, J. Flügge, and M. Oswald, 1993, J. Chem. Phys. 98, 4478.
The predictions are of sufficient accuracy for all radio astronomical purposes.
At low temperatures, it may be necessary to discern between ortho-l-C3D2 and para-l-C3D2. The ortho states are described by Ka even, the para states by Ka odd. The nuclear spin-weights are 2 and 1 for ortho-l-C3D2 and para-l-C3D2, respectively.The JKaKc = 111 is the lowest para state. It is approximately 5.136 cm–1 above ground.
The dipole moment was assumed to agree with that of the main isotopic species and was reported in (1).

Lines Listed1450
Frequency / GHz< 1200
Max. J67
log STR0-8.5
log STR1-4.0
Isotope Corr.-7.64
Egy / (cm–1)0.0
 µa / D4.1
 µb / D 
 µc / D 
 A / MHz145155.
 B / MHz9402.84
 C / MHz8818.15
 Q(300.0)12016.3205
 Q(225.0)7800.2592
 Q(150.0)4244.2542
 Q(75.00)1500.9606
 Q(37.50)531.4940
 Q(18.75)188.7559
 Q(9.375)68.7996
 Q(5.000)29.5732
 Q(2.725)14.1718
detected in ISM/CSMno


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