KC
Potassium carbide, X 4Σ
Species tag 051510
Version1
Date of EntryJan. 2001
ContributorH. S. P. Müller

The lines have been reported by
(1) J. Xin, and L. M. Ziurys, 1999, J. Chem. Phys. 110, 4797.
The λ spin-spin coupling value used here is already the same as in
(2) P. M. Sheridan, J. Xin, L. M. Ziurys, S. A. Beaton, S. M. Kermode, and J. M. Brown, 2002, J. Chem. Phys. 116, 5544.
The observed transitions cover N between 19 and 30. Extrapolations to much lower or higher quantum numbers should be taken with some care. Furthermore, for low N transitions the 39K hyperfine splitting may be resolvable.
The dipole moment is not known. It may be considerably different from the 4.1 D calculated for CaC (e052505.cat).

Lines Listed257
Frequency / GHz< 1000
Max. J59
log STR0-6.5
log STR1-4.5
Isotope Corr.-0.0351
Egy / cm-10.0
 µa / D1.0
 µb / D 
 µc / D 
 A / MHz 
 B / MHz8619.89
 C / MHz 
 Q(300.0)2912.7903
 Q(225.0)2182.8962
 Q(150.0)1454.3623
 Q(75.00)727.1783
 Q(37.50)364.0903
 Q(18.75)182.6736
 Q(9.375)92.0011
detected in ISM/CSMno


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