SiCN
Cyanosilylidyne, X 2Πr
Species tag 054501
Version2
Date of EntryJan. 2002
ContributorH. S. P. Müller

The lines have been reported in
(1) A. J. Apponi, M. C. McCarthy, C. A. Gottlieb, and P. Thaddeus, 2000, Astrophys. J. 536, L55; and in
(2) M. C. McCarthy, A. J. Apponi, C. A. Gottlieb, and P. Thaddeus, 2001, J. Chem. Phys. 115, 870.
The fit has been carried out using constants and quantum numbers of Hund's case (b). The prediction of the 14N hyperfine splitting for the high lying Π3/2 substate should be viewed with some caution because no low N transition with resolved hyperfine splitting has been observed for this substate.
The dipole moment is from an ab initio calculation mentioned in (1).

Lines Listed1412
Frequency / GHz< 1093
Max. J99
log STR0-7.5
log STR1-5.3
Isotope Corr.-0.0415
Egy / (cm-1)0.0
 µa / D2.9
 µb / D 
 µc / D 
 A 
 B5543.414
 C 
 Q(300.0)11582.8797
 Q(225.0)8297.2095
 Q(150.0)5094.2877
 Q(75.00)2126.8247
 Q(37.50)906.2768
 Q(18.75)430.3611
 Q(9.375)216.8479
detected in ISM/CSMyes


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