High resolution vibration–rotation spectra of the arsine local mode (110 A1/E) band

Abstract

The high resolution Fourier transform spectrum of arsine was revisited in the region 4000–4350 cm-1 at a resolution of 0.006 cm-1. Altogether 189 energy levels of the local mode (110 A1/E) states were assigned by use of the ground state combination difference method. The vibration–rotation parameters were obtained from a weighted non-linear least-squares fit and discussed in the local mode model.