THE $^{1}B_{2} (\Pi\Pi^{*}) \leftarrow ^{1}A_{1}$ ELECTRONIC BAND SYSTEM OF TOLUENE

Author Institution:The $^{1}B_{2}(\Pi \Pi ^{*})\leftarrow ^{1}A_{1}$ 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 $^{1}B_{2}$ state fundamentals. The rotational definition of the strong bands near the origin, $\nu_{00} = 37478.76 cm^{-1}$, 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