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

Journal Article · Fri Aug 15 00:00:00 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), Vol. 73:4
• Country of Publication: United States
• Language: English

Related Subjects

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