Molecular Rydberg states. Low-energy Rydberg states of azulene

Journal Article · Thu Sep 15 00:00:00 EDT 1983 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100242a009· OSTI ID:5506783

Lewis, J W ^[1]; Nauman, R V; Bouler, Jr, D B; McGlynn, S P

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1. Louisiana State Univ., Baton Rouge

Electronic spectra of azulenes are discussed. The low-energy Rydberg states are emphasized. The 3d-Rydberg states lie at 45,000 to 50,000 cm/sup -1/. They are partially quenched by chemical substituents and totally quenched in condensed media. The 3p-Rydberg states lie at approx. 40,000 cm/sup -1/ in azulene and are largely quenched in all derivatives. The quenching of the 3p Rydbergs of azulene in condensed media is responsible for much of the alterations that occur in the S/sub 4/ reverse arrow S/sub 0/ absorption region of azulene upon going from gaseous to condensed phases. The 3s-Rydberg states should lie in the S/sub 2/, S/sub 3/, low-energy S/sub 4/ reverse arrow S/sub 0/ absorption region. Investigations of this region demonstrate two phase-dependent behavioral peculiarities. However, neither of these provides acceptable proof of the presence of a low-energy 3s Rydberg.

• OSTI ID: 5506783
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 87:19; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104 -- Spectral Procedures-- (-1987)
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400500* -- Photochemistry
ABSORPTION SPECTRA
ALKANES
AZULENE
CORRECTIONS
DATA
DICHROISM
DISPERSIONS
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
EMISSION SPECTROSCOPY
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXPERIMENTAL DATA
FLUIDS
FLUORESCENCE SPECTROSCOPY
GASES
HYDROCARBONS
INFORMATION
IONIZATION
LOW TEMPERATURE
MAGNETIC CIRCULAR DICHROISM
MEDIUM TEMPERATURE
MIXTURES
MOLECULAR STRUCTURE
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SOLVENTS
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
RYDBERG CORRECTION
SOLVENTS
SPECTRA
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
TEMPERATURE DEPENDENCE