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 Systèmes Atmosphériques (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.