MATI Spectroscopy of m-chloroaniline
Date Issued
2009
Date
2009
Author(s)
Yeh, Wen-Lan
Abstract
The one-color, two-color resonant two photon ionization (R2PI) and mass analyzed threshold ionization (MATI) spectroscopic techniques have been used to probe the molecular properties of m-chloroaniline. The obtained experimental data include the precise transition energy from the ground state to the first electronically excited state and the adiabatic ionization energy as well as the active vibrational spectra in the first electronically excited S1 and cationic ground D0 states. The band origin of the electronic transition and ionization energy are determined to be 33658 cm-1 and 63958 cm-1, respectively. Within the present experimental detection limit, there is no difference between the measured values for the 35Cl and 37Cl isotopomers. Analysis of our experimental results shows that most of the active modes of m-chloroaniline in the S1 and D0 states are related to in-plane vibrations of the aromatic ring. We have also performed the ab initio and density functional calculations which help in spectral assignment and support our experimental findings. The present studies allow us to investigate the isotope and vicinal substitution effects on the transition energy and molecular vibrations.
Subjects
MATI
1C-R2PI
2C-R2PI
Type
thesis
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