CaCCH
Calcium monoacetylide, X 2Σ+
Species tag 065511
Version1*
Date of EntryOct. 2011
ContributorH. S. P. Müller

The lines have been reported by
(1) M. A. Anderson and L. M. Ziurys, 1995, Astrophys. J. 444, L57.
For low N transitions hyperfine splitting due to the 1H nucleus may be resolvable. Therefore, predictions at lower frequencies should be viewed with some caution. The predictions should be quite reliable at higher frequencies.
The dipole moment was taken from
(2) A. J. Marr, J. Perry, and T. C. Steimle, 1995, J. Chem. Phys. 103, 3861.

Lines Listed198
Frequency / GHz< 675
Max. J99
log STR0-6.7
log STR1-3.0
Isotope Corr.-0.0228
Egy / cm–10.0
 µa / D3.01
 µb / D 
 µc / D 
 A / MHz 
 B / MHz3396.490
 C / MHz 
 Q(300.0)3686.6238
 Q(225.0)2764.1805
 Q(150.0)1842.3710
 Q(75.00)921.1989
 Q(37.50)460.8530
 Q(18.75)230.7406
 Q(9.375)115.7004
detected in ISM/CSMno


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