Microwave Spectroscopy of Biological Substances. Ii. Paramagnetic Resonance in X-irradiated Carboxylic and Hydroxy Acids.

I For a description of the phenomena of magnetic resonance see W. Gordy, W. V. Smith, and R. F. Trambarulo, Microwave Spectroscopy (New York: John Wiley & Sons, Inc., 1953), chap. v. See also chap. ii. by W. Gordy, of Chemical Applications of Spectroscopy, soon to be published by Interscience Publishers, Inc., in the "Techniques of Organic Chemistry" series, ed. A. Weissberger. 2 B. Commoner, J. Townsend, and G. W. Pake, Nature, 174, 689, 1954. 3 H. Shields, W. B. Ard, and W. Gordy (to be published). 4R. Livingston, H. Zeldes, and E. H. Taylor (Phys. Rev., 94, 724, 1954) have found that the free atom splitting of 500 gauss for H is also observed for atomic hydrogen trapped in the frozen acids H2SO4, H3PO4, and HC104. 6 W. B. Ard, H. Shields, and W. Gordy, J. Chem. Phyg., 23, 1727 (1955). 6 J. Combrisson and J. Uebersfeld, Compt. rend. Acad. sci. (Paris), 258, 1397, 1954. See also Discussions Faraday Soc., No. 18, 1955.