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Spin Resonance and Electrical Conductivity of Indole-Iodine

Naturevolume 191pages168169 (1961) | Download Citation



INDOLE and iodine form a black complex that exhibits a strong electron spin resonance signal1. The interpretation that has been given is that indole, if complexed with a small acceptor such as iodine, may act as an especially strong electron donor due to the negative formal charge that exists on carbon 2 and 3.

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  1. 1

    Szent-Györgyi, A., and Isenberg, I., Proc. U.S. Nat. Acad. Sci., 46, 1334 (1960).

  2. 2

    Kommandeur, J., and Hall, F. R., Bull. Amer. Phys. Soc., 6, 421 (1959). Singer, L. S., and Kommandeur, J., ibid., 6, 421 (1959).

  3. 3

    Huggins, C. M., and LeBlanc, jun., O. H., Nature, 186, 552 (1960).

  4. 4

    Isenberg, I., Szent-Györgyi, A., and Baird, S. L., Proc. U.S. Nat. Acad. Sci., 46, 1307 (1960). Smaller, B., and Yasaitis, E. L., Rev. Sci. Instr., 24, 991 (1953).

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  1. B. SMALLER: Argonne National Laboratory, Solid State Science Division, Argonne, Illinois.


  1. Institute for Muscle Research, Marine Biological Laboratory, Woods Hole, Massachusetts

    • B. SMALLER
    • , I. ISENBERG
    •  & S. L. BAIRD JUN.


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