Experimental results were published by
(1) A. Taleb-Bendiab, F. Scappini, T. Amano, and J. K. G. Watson, 1996, J. Chem. Phys. 104, 7431.
The entry may be sufficiently accurate for all observational purposes. Transitions with predicted uncertainties exceeding 0.2 MHz should be viewed with some caution.
The a-dipole moment component was published by
(2) C. T. Scurlock, T. Henderson, S. Bosely, K. Y. Jung, and T. C. Steimle, 1994, J. Chem. Phys. 100, 5481.
Even though the molecule posseses a moderately large b-dipole moment component, no such transitions were calculated because their frequencies are too uncertain. The value is from an ab initio calculation in (1).