Abstract
We have applied two-color resonant two-photon mass-analyzed threshold ionization technique to record the vibrational spectra of the selected rotamers of m-cresol. The adiabatic ionization energies of cis and trans m-cresol are determined to be 66,933 ± 5 and 67,084 ± 5 cm −1, respectively. Frequencies of the in-plane ring vibrations 6a, 1, and 9b are measured to be 528, 720, 1167 cm −1 for the cis and 520, 698, and 1153 cm −1 for the trans m-cresol cation. This indicates that different orientation of the OH group with respect to the CH 3 group slightly influences these ring vibrations.
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