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Vapor pressure studies of pyridine, picolines and 2,6-lutidine in isooctane

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Abstract

The vapor pressures of pyridine, 2-, 3- and 4-picoline and 2,6-lutidine have been determined as a function of their concentration in isooctane at 25°C by gas chromatographic analysis of the head-space over their solutions. Henry's law constants were determined and the vapor pressure data were treated in terms of various self-association models. The apparent self-association of the pyridine bases can be rationalized as resulting from intermolecular interactions with both the nitrogen lone pair of electrons and with the π-electrons.

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Correspondence to J. Howard Rytting.

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Warycha, S., Rytting, J.H. Vapor pressure studies of pyridine, picolines and 2,6-lutidine in isooctane. J Solution Chem 13, 589–598 (1984). https://doi.org/10.1007/BF00647227

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Key Words

  • Vapor pressure
  • pyridine
  • picolines
  • 2,6-lutidine
  • Henry's constant
  • self-association