Oxyborane, X 1Σ+, 10B isotopolog
Species tag 027512
Date of EntryJuly 2009
ContributorH. S. P. Müller

The pure rotational data have been reported by
(1) Y. Kawashima, Y. Endo, K.Kawaguchi, and E. Hirota, 1987, Chem. Phys. Lett. 135, 441;
one additional transition was reported in
(2) Y. Kawashima, Y. Endo, and E. Hirota, 1989, J. Mol. Spectrosc. 133, 116.
Even though 10B hyperfine structure was resolved only in the J = 2 – 1, the apparent line maxima are somewhat different from the hyperfine-free line centers, though only slightly for only up to J = 5 – 4. Therefore, no transitions have been merged.
The predictions are deemed to be reliable up to about 1.0 THz, possibly higher.
At low J, it is possible to resolve the 10B hyperfine splitting. Therefore, a separate hyperfine calculation up to J' = 5 is provided. Note: The partion function given below takes into account this splitting !
The dipole moment was assumed to agree with that of the main species, see e028514.cat.

Lines Listed42
Frequency / GHz< 3383
Max. J42
log STR0-4.0
log STR1-5.0
Isotope Corr.-0.7023
Egy / (cm–1)0.0
 µa / D2.69
 µb / D 
 µc / D 
 A / MHz 
 B / MHz40575.40
 C / MHz 
detected in ISM/CSMno

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