Knowledge Bank

Fourier Transform infrared spectra of $HNO2$ have been recorded with a Bruker IFS 120HR, at an instrumental resolution better than $0.003cm-1$. The pressure conditions of the various parent gases ($NO2,NO$ and $H2O$) are optimized during the experiments. The analysis of the $\nu 1$ band in $trans-HNO2$ (1) will be reported. A very specific interaction pattern perturbing the $\nu 1=1$ level will be discussed. Preliminary results of the analysis of other bands in several wavelength regions will be also reported.