Fourier transform emission spectroscopy of CoCl in the 500 nm region

Fourier transform emission spectra of CoCl were obtained with a tube furnace-DC discharge source in the 450-500 nm spectral region. In addition to observing two different band systems, which were assigned as [20.7] and [21.3] by Adam et al. [J. Mol. Spectrosc. 212 (2002) 111], we obtained data for additional sub-bands and vibrational levels. In contrast to the previous work, intense Q branches are seen in the [21.3]- bands which indicate that these bands are likely ΔΛ≠0 transitions. The equilibrium rotational constant B_e for the ground state is 0.1801104(28) cm⁻¹, the equilibrium bond length is 2.065122(16) Å and ΔG_1/2 is 430.418(5) cm⁻¹.