Vibrational spectra and assignments for quinoline and isoquinoline

Assignments of the vibrational spectra of quinoline and isoquinoline are reported. Calculated frequencies are based on normal coordinate analysis, using the Urey-Bradley Force Field including Kekule modification with force constants transferred from naphthalene and s-triazine. The calculated assignments are in good agreement with those based on observed frequencies. Thermodynamic functions based on the assigned frequencies are also given.