Knowledge Bank

The $\mathrm{<mrow\; data-mjx-texclass="ORD">1</mrow>}B2(\Pi \Pi \ast )\leftarrow 1A1$ electronic band system of the normal isotope of toluene has been photographed and measured at high resolution. Analysis of the strong vibronic components has led to identification of active $\mathrm{<mrow\; data-mjx-texclass="ORD">1</mrow>}B2$ state fundamentals. The rotational definition of the strong bands near the origin, $\nu 00=37478.76cm-1$, suggests that a band contour computation including internal rotation of the methyl group should be attempted. Preliminary results of such as asymmetric top/internal rotation computation will be presented.