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The Raman Spectra and Molecular Constants of Phosphorus Trifluoride and Phosphine

Yost, Don M. and Anderson, Thomas F. (1934) The Raman Spectra and Molecular Constants of Phosphorus Trifluoride and Phosphine. Journal of Chemical Physics, 2 (10). pp. 624-627. ISSN 0021-9606. https://resolver.caltech.edu/CaltechAUTHORS:YOSjcp34c

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Abstract

The Raman frequencies of PF3(l) were found to be omega1(1), 890 cm^-1; omega2(1), 531 cm^-1; omega3(2), 840 cm^-1; and omega4(2), 486 cm^-1, indicating a regular pyramid structure of the molecule. Three frequencies were observed for PH3(l): 2306 cm^-1, 1115 cm^-1 and 979 cm^-1. With the aid of electron diffraction data the standard virtual entropies of PF3(g), PCl3(g), AsF3(g), and AsCl3(g) at 25°C are calculated to be 64.2, 74.7, 69.2, and 78.2 cal./deg., respectively; that of PH3(g) is estimated to be 50.5 cal./deg. These data lead to the following free energies of formation at 25°C: AsCl3(g), -62,075 cal.; PH3(g), 2750 cal.; PCl3(g), -62,220 cal.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1063/1.1749363DOIUNSPECIFIED
Additional Information:Copyright © 1934 American Institute of Physics. Received July 25, 1934. We wish to express our indebtedness to Dr. L.O. Brockway and Mr. F.T. Wall for permitting us to use as yet unpublished results of electron diffraction experiments made on phosphorus trifluoride, arsenic trifluoride and arsenic trichloride. Gates Chemical Laboratory, Publication No. 423.
Issue or Number:10
Record Number:CaltechAUTHORS:YOSjcp34c
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:YOSjcp34c
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:10623
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:22 May 2008
Last Modified:03 Oct 2019 00:11

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