First Investigation of the Inversion Rovibrational Spectrum of the 15NHD2 Molecule in the Region from 1100 to 1350 cm–1: the Fundamental ν5 Band

The high-resolution spectrum of the 15NHD2 molecule recorded in the Laboratoire Interuniversitaire des Systemes Atmospheriques (LISA), Paris Diderot University, France, is studied. An analysis is based on the method of ground state combination differences. As a result of the analysis of two inversion vibrational (v5 = 1, s) and (v5 = 1, a) states, more than 1300 rovibrational transitions have been assigned, and about 150 upper vibrational energy levels have been determined.