Abstract

Melting points and enthalpies of a number of crystalline charge-transfer complexes (polynuclear aromatic hydrocarbons and some methyl substituted derivatives with 2,4,6-tri-nitrotoluene and picric acid) were determined by using differential thermal analysis. It was found that the determination of the enthalpy by the thermal analysis method is possible only for thermally stable complexes. For unstable complexes the value of enthalpy are somewhat lower than those expected for stable complexes.

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