Fourier transform infrared emission spectra of MnH and MnD

Abstract

Fourier transform infrared emission spectra of MnH and MnD were observed in the ground X 7Σ + electronic state. The vibration-rotation bands from v = 1 → 0 to v = 3 → 2 for MnH and from v = 1 → 0 to v = 4 → 3 for MnD were recorded at an instrumental resolution of 0.0085 cm −1. Spectroscopic constants were determined for each vibrational level and equilibrium constants were found from a Dunham-type fit. The equilibrium vibrational constant ( ω e) for MnH was found to be 1546.84518(65) cm −1, the equilibrium rotational constant ( B e) is 5.6856789(103) cm −1 and the eqilibrium bond distance ( r e) was determined to be 1.7308601(47) Å.