Rotational analysis of the inversion-vibrational spectra of the ¹⁵NHD₂ molecule: ν₆ fundamental band

This paper considers an assignment of the high-resolution Fourier spectra of ¹⁵NHD₂ molecule in the region of ν₆ band. The analysis is based on the combination differences method. As a result of the analysis, the energy structure of inversion-vibrational states (v₆=1, s) and (v₆=1, a) was obtained. More than 550 vibration-rotation transitions were found and values of about 140 upper vibrational energy levels were determined in total. (paper)