The Partial Pressure of Hydrogen Chloride from its Solutions in o-Nitrotoluene, m-Nitrotoluene and n-Hexane at 25°

Abstract

Some Partial Pressures of Hydrogen Chloride 1189 potassium hydroxide in 50% aqueous ethyl alcohol. This extends the observations of Barnett and his co-workers to more drastic conditions.Two interpretations of this and similar facts are considered, that a Walden inversion must attend such a replacement reaction, or that a carbonium ion must be formed in which the central carbon atom and the three atoms directly combined with it lie in a common plane. The latter concept, advocated previously by Bartlett and Knox by analogy to boron compounds, is here correlated with the resonance normally present in an arylated carbonium ion. This interpre-tation is favored but not conclusively proved.The bromine can be replaced by hydrogen by means of reduction with sodium and alcohol. Maleic anhydride has been added to ethyl N-9*• anthrylcarbamate to yield a bridged-ring urethan (VII) which is readily hydrolyzed to the aminodibasic acid related to II. Nitrous acid converts this into a compound which is probably the dibasic acid with hydroxyl on the bridge-head. As expected by Barnett, this compound is very unstable to alkali. Its decomposition is interpreted as ketol cleavage. Cambridge, Massachusetts

Aromatic Molecular Complexes of the Electron Donor-Acceptor Type.

“…The observation that the partial pressure of hydrogen chloride over its solution in benzene shows negative deviations from Raoult's law although it obeys Henry's law is taken as an indication of solvent-solute interaction to form a complex, CeH6 • HC1 (228). Attempts have been made to determine the extent of this interaction and those of other aromatic substances with hydrogen chloride through considerations based on the observed Henry's law constants (224,226,227).…”

Liquid-Vapor Equilibrium Compositions in Hydrogen Chloride–n-Butane System

“…Phase equilibria data for the hydrogen chloride-n-butane system are required if absorption and fractionating equipment handling these two components are to be designed with confidence. A literature search revealed some data on the solubility of hydrogen chloride in propane (0), hexane (5), benzene (1), octane (I), dodecane (I), and cyclohexane (7), but nothing was found for the system hydrogen chloride-Ti-butane. This paper presents the equilibrium liquid and vapor compositions for the latter system at 70°, 120°, and 180°F.…”