The experimental lines were taken from
(1) M. A. Brewster and L. M. Ziurys, 2001, Astrophys. J. 559, L163.
With respect to the Sep. 2001 entry, an ab initio dipole moment is used in the present entry. It was taken from
(2) G. L. Gutsev, L. Andrews, and C. W. Bauschlicher Jr, 2003, Theor. Chim. Acc. 109, 298.
The ab initio dipole moments of transition metal compounds should be viewed with some caution. The version number has been retained.