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The infra-red spectrum of hydrogen peroxide

Giguère, Paul A. (1950) The infra-red spectrum of hydrogen peroxide. Journal of Chemical Physics, 18 (1). pp. 88-92. ISSN 0021-9606. doi:10.1063/1.1747464.

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The absorption spectrum of hydrogen peroxide vapor was examined under low dispersion in the range 2–15µ. Four bands were observed at 3590, 2630, 1255, and 877 cm^–1. The spectrum of the liquid also was measured between 2 and 21µ; it showed five bands at about 3400, 2780, 1350, 880, and 550 cm^–1. The last one, which seems very diffuse, is presumably the torsional oscillation of the OH groups; as such it corresponds to a potential energy barrier of the order of 4 kcal./mole. New assignments are proposed in agreement with the model of Penney and Sutherland. Under high dispersion the second harmonic O--H frequency was found to consist of two identical hybrid bands at 7036.6 and 7041.8 cm^–1, of which the rotational constant for the ground state is in perfect agreement with that already found for the third harmonic band. The explanation given previously for the doublet character of the vibrational levels of hydrogen peroxide is further substantiated by the present results. From both vibrational and rotational data the O--H distance in hydrogen peroxide appears to be slightly greater than that in water.

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Additional Information:© 1950 American Institute of Physics. Received May 31, 1949. This work was carried out during the tenure of a Fellowship of the John Simon Guggenheim Memorial Foundation. The author is deeply grateful to Professor Richard M. Badger for his continued interest and invaluable advice, especially in connection with the rotational analysis. Contribution No. 1306 from the Gates and Crellin Laboratories of Chemistry.
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Gates and Crellin Laboratories of Chemistry1306
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ID Code:11457
Deposited By: Tony Diaz
Deposited On:28 Aug 2008 03:43
Last Modified:08 Nov 2021 21:59

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