Knowledge Bank

Vibrational-rotational bands of methyl acetylene between 2000 and $3500cm-1$ were observed on Professor Overend's spectrometer at the University of Minnesota. These high resolution spectra permitted a more complete assignment of the fine structure than was possible in earlier studies and favored a revised assignment for the acetylenic C-H stretch, $\nu t$. The molecular constants obtained from this study will be reported.