Journal of Solution Chemistry

, Volume 9, Issue 8, pp 553–561 | Cite as

Some solvent properties of 3-methylsydnone

  • Robert J. Lemire
  • Paul G. Sears


The behavior of selected solutes in 3-methylsydnone (ε=144.0 at 40°C) was studied. Water is miscible with 3-methylsydnone in all proportions. The dielectric constants, viscosities, densities, and refractive indices of aqueous solutions of 3-methylsydnone have been determined at 40.0°C. A large dielectric decrement was observed, particularly at high 3-methylsydnone mole fraction; however, the excess volumes were found to be relatively small. Conductances were determined for four salts in pure 3-methylsydnone, also at 40°C. The conductance data, as analyzed by the Justice equation, indicated that 3-methylsydnone is a good ionizing medium. Use of tris(isopentyl)butylammonium tetraphenylborate as a reference electrolyte allowed estimation of limiting molar conductances of several ions. Bromide ions. Bromide ions are probably poorly solvated in 3-methylsydnone relative to sodium and potassium ions.

Key words

3-Methylsydnone aqueous solvent mixtures dielectric constants viscosities excess volumes refractive indices electrolytic conductances 


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Copyright information

© Plenum Publishing Corporation 1980

Authors and Affiliations

  • Robert J. Lemire
    • 1
  • Paul G. Sears
    • 1
  1. 1.Department of ChemistryUniversity of KentuckyLexington

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