Basicity of saturated solutions of alkali metal hydroxides in dimethylsulfoxide

  • B. A. Trofimov
  • A. M. Vasil'tsov
  • S. V. Amosova
Physical Chemistry


  1. 1.

    Saturated solutions of alkali metal hydroxides in dimethyl sulfoxide are highly basic. The values of the acidity function H varied from 20.5 to 30.5 in going from LiOH to KOH.

  2. 2.

    The strong dependence of the basicity of the alkali-DMSO system on the nature of the cation is the result of an ion pair interaction in the solution which increases with a decrease in the radius of the cation and the varied drying capacity of the alkalis present in excess.

  3. 3.

    The KOH-DMSO pair is an example of the superbasic medium which is simplest to prepare and use; its basicity is located between potassium tert-butylate and potassium dimsyl in DMSO.



Potassium DMSO Hydroxide Acidity Dimethyl 
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Copyright information

© Plenum Publishing Corporation 1986

Authors and Affiliations

  • B. A. Trofimov
    • 1
  • A. M. Vasil'tsov
    • 1
  • S. V. Amosova
    • 1
  1. 1.Institute of Organic Chemistry, Siberian BranchAcademy of Sciences of the USSRIrkutsk

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