Letter | Published:

Far Ultra-Violet Absorption Spectra of Hydrogen-bonded Methanol

Naturevolume 193pages675677 (1962) | Download Citation



MANY examples of changes in ultra-violet absorption spectra attributable to hydrogen bonding have been reported and summarized by Ito1. However, in few of these cases has the change in absorptivity been as pronounced as in the infra-red O–H stretching vibrations. The reason for this is probably due to the fact that the transitions responsible for the ultra-violet absorption have not been localized in that portion of the molecule most directly affected by the hydrogen bond. In this communication attention is directed to ultra-violet absorption bands of alcohols that vary drastically with concentration and probably arise from excitation of lone-pair electrons on an oxygen atom acting as a proton acceptor2.

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  1. 1

    Ito, M., J. Mol. Spect., 4, 125 (1960).

  2. 2

    Mulliken, R. S., J. Chem. Phys., 3, 506 (1935).

  3. 3

    Mecke, R., Disc. Farad. Soc., 9, 161 (1950).

  4. 4

    Harrison, A. J., Cederholm, B. J., and Terwilliger, M. A., J. Chem. Phys., 30, 355 (1959).

  5. 5

    Barrett, J., and Mansell, A. L., Nature, 187, 138 (1960).

  6. 6

    Watanabe, K., and Zelikoff, M., J. Opt. Soc. Amer., 43, 753 (1953).

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  1. Beckman Instruments, Inc., Fullerton, California



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