Knowledge Bank

The liquid and vapor phase far-infrared, mid-infrared and Raman spectra of 2-methyleyclopentanone have been recoded and analyzed. Semi-empirical (MM3) and ab-initio (Gaussian 94) calculations have also been performed to help assign the ground stare spectra and predict ground state conformation. The low frequency modes, were of special interest: the ring bending ($75cm-1$), the ring twisting ($251cm-1$), and the methyl torsion ($209cm-1$). Preliminary fluorescence studies of the C=O inversion in the $S1(n,\pi \ast )$ state have been carried out.