Resonantly enhanced multiphoton ionization of pyrrole, N-methyl pyrrole, and furan

Journal Article · Fri Aug 15 04:00:00 EDT 1980 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.440358· OSTI ID:5190694

Cooper, C D; Williamson, A D; Miller, J C; Compton, R N

The resonantly enhanced multiphoton ionization (REMPI) spectra of pyrrole (C/sub 4/H/sub 5/N), N-methyl pyrrole (C/sub 5/H/sub 7/N), and furan (C/sub 4/H/sub 4/O) have been measured in the wavelength region from 365 to 680 nm. New and previously observed Rydberg states are reported for pyrrole and furan. Vibrational constants are presented for most of the Rydberg series. Accurate ionization potentials are derived for pyrrole (8.207 +- 0.003 eV) and N-methyl pyrrole (7.94 +- 0.02 eV). A strong two photon allowed transition is observed in N-methyl pyrrole at 41 193 cm/sup -1/ (0,0) and is attributed to an /sup 1/A/sub 2/ state. The corresponding state is not seen in pyrrole; however, it may be obscured by overlapping Rydberg series. Mass spectra following REMPI for benzene, pyrrole, and furan are reported. The degree of ionic fragmentation depends upon laser power density and wavelength.

• Research Organization: Department of Physics, University of Georgia, Athens, Georgia 30602
• OSTI ID: 5190694
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 73:4; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTRA
AZOLES
FURANS
HETEROCYCLIC COMPOUNDS
IONIZATION
IONIZATION POTENTIAL
MASS SPECTRA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PHOTOIONIZATION
PYRROLES
SPECTRA
ULTRAVIOLET SPECTRA
VISIBLE SPECTRA