40K37Cl, v = 0 – 5
Potassium chloride, 40K, 37Cl isotopolog, v = 0 – 5
Species tag 077513
Version1*
Date of EntryMay 2019
ContributorH. S. P. Müller

The rotational lines were summarized by
(1) M. Caris, F. Lewen, H. S. P. Müller, and G. Winnewisser, 2004, J. Mol. Struct. 695–696, 243.
The predictions are based on a combined fit of all isotopic species from (1). Vibrational energies were derived from Yi0 values taken from
(2) E. J. Barton, C. Chiu, S. Golpayegani, S. N. Yurchenko, J. Tennyson, D. J. Frohman, and P. F. Bernath, 2014, Mon. Not. R. Astron. Soc. 442, 1821.
In addition, three higher order parameters were estimated from various trial fits based on the data from (1). The predictions extend to v = 5 and up to 1.9 THz.
Predictions should be viewed with caution for transitions with calculated uncertainties above 0.2 MHz. Hyperfine effects due to the 40K and 37Cl nuclei were not considered in the predictions because of their small effects even at very low values of J.
The dipole moments were calculated from the formula below derived by mass scaling from
(3) R. van Wachem and A. Dymanus, 1967, J. Chem. Phys. 46, 3749.

Lines Listed1725
Frequency / GHz< 1864
Max. J296
log STR0-20.0
log STR1-20.0
Isotope Corr.-4.053
Egy / cm-10.0, 271.9, 541.5, 808.9, ...
 µa / D10.23911 + 0.058445(v+.5) + 0.000182(v+.5)^2
 µb / D 
 µc / D 
 A / MHz 
 B / MHz3700.966 - 11.129(2v+1) + ...
 C / MHz 
 Q(2000.)69001.2161
 Q(1500.)39255.1591
 Q(1000.)18117.4436
 Q(500.0)5280.4504
 Q(300.0)2341.2073
 Q(225.0)1548.1937
 Q(150.0)916.6367
 Q(75.00)426.4863
 Q(37.50)212.1781
 Q(18.75)106.2348
 Q(9.375)53.2804
detected in ISM/CSMnot yet


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