On the analysis of the gauche-form microwave spectrum of the isopropyl alcohol molecule

Abstract The microwave spectrum of isopropyl alcohol was investigated in the region 10–80 GHz with a high-sensitivity Stark-modulation spectrometer. The spectrum of gauche form of this molecule has been analyzed. To correctly reproduce the experimental data, the effective vibration-rotation Hamiltonian has been improved. The parameters obtained from the fitting reproduce the experimental data with an average deviation σ ⋍ 200 kHz .