Knowledge Bank

The high resolution infrared absorption spectrum of the ONCCNO molecule has been recorded in the gas phase with a Bruker IFS 120 spectrometer at a resolution of $0.003cm-1$. No previous high resolution spectra have been recorded for this semistable molecule. The fundamental band of the $\upsilon 4$ and $\upsilon 5$ vibrational modes at $2246cm-1$ and $1250cm-1$ have been analyzed and the rotational constants have been obtained. The hot bands that involve the low-lying bending modes are currently being analyzed. The ONCCNO molecule is linear or perhaps slightly quasilinear.