Published March 1, 1934
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Journal Article
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The Raman Spectrum of Arsenic Trifluoride and the Molecular Constants of AsF3, AsCl3 and PCl3
- Creators
- Yost, Don M.
- Sherborne, John E.
Chicago
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Abstract
The Raman spectrum of AsF3 was found to consist of four lines with the frequencies omega1(1), 707; omega2(1), 341; omega3(2), 644; and omega4(2), 274 cm^—1. The selection rules require a pyramidal molecule. Electron diffraction data for AsF3, AsCl3 and PCl3 are used to establish the bond angles. The entropies of the three trihalides were calculated, and the standard free energies of formation of AsCl3(l) and AsCl3(g) were determined to be —65,190 cal. and —62,718 cal., respectively, at 25°.
Additional Information
Copyright © 1934 American Institute of Physics. Received January 2, 1934. Electron diffraction experiments were made on AsF3 and AsCl3 by Dr. L.O. Brockway of this Laboratory, and we are greatly indebted to him for the results. A detailed account of the investigation will be published later by Professor Pauling and Dr. Brockway.Files
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