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1963•The Journal of Chemical PhysicsRequires access

Vacuum-Ultraviolet Absorption Spectra of the Cyclic Ethers: Trimethylene Oxide, Tetrahydrofuran, and Tetrahydropyran

Gonzalo Hernandez

Open publisher page 43 citations

Abstract

The vacuum-ultraviolet spectra of trimethylene oxide, tetrahydrofuran and tetrahydropyran show discrete absorption at frequencies higher than 49 000 cm—1. Rydberg series are found to converge to a first ionization potential at 77 980 cm—1 (9.667 eV), 75 960 cm—1 (9.42 eV), and 74 630 cm—1 (9.25 eV), respectively for trimethylene oxide, tetrahydrofuran, and tetrahydropyran. Analysis of the vibronic structure indicates the upper vibrational frequencies are only slightly changed from those of the ground state.

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The vacuum-ultraviolet spectra of trimethylene oxide, tetrahydrofuran and tetrahydropyran show discrete absorption at frequencies higher than 49 000 cm—1. Rydberg series are found to converge to a first ionization potential at 77 980 cm—1 (9.667 eV), 75 960 cm—1 (9.42 eV), and 74 630 cm—1 (9.25 eV), respectively for trimethylene oxide, tetrahydrofuran, and tetrahydropyran. Analysis of the vibronic structure indicates the upper vibrational frequencies are only slightly changed from those of the ground state.

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Available abstract

The vacuum-ultraviolet spectra of trimethylene oxide, tetrahydrofuran and tetrahydropyran show discrete absorption at frequencies higher than 49 000 cm—1. Rydberg series are found to converge to a first ionization potential at 77 980 cm—1 (9.667 eV), 75 960 cm—1 (9.42 eV), and 74 630 cm—1 (9.25 eV), respectively for trimethylene oxide, tetrahydrofuran, and tetrahydropyran. Analysis of the vibronic structure indicates the upper vibrational frequencies are only slightly changed from those of the ground state.

Key concepts: Tetrahydropyran, Tetrahydrofuran, Rydberg formula, Excited state, Chemistry, Absorption spectroscopy, Ultraviolet, Spectral line

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