Knowledge Bank

The infrared spectra (50-4000 $cm-1$) of gaseous and solid cyclo-butylmethylether and cyclobutylmethylether-$d3$ and the Raman spectra (25-4000 $cm-1$) of gaseous, liquid and solid cyclobutylmethylether and cyclobutylmethylether-$d3$ have been recorded. Depolarization values were measured for both the gaseous and liquid states. Most of the forty-two fundamental vibrations have been assigned, and support for only one molecular configuration is presented. The interesting methyl torsion and ring puckering vibration were observed at 195 and 101 $cm-1$, respectively, for the ``light” molecule and the three-fold barrier to internal rotation of the methyl group has been calculated. The ring puckering vibration for cyclobutanol has been observed and the potential function governing this motion determined.