Abstract

A number of crystalline charge-transfer complexes of polynuclear aromatic hydrocarbons with 2,4,6-trinitrotoluene (TNT) and picric acid were investigated by differential thermal analysis. It was found that the thermal behaviour of each complex during heating is different and depends mainly on its thermal stability. The temperatures, enthalpies and entropies of polymorphic transitions, and the melting points of eutectic mixtures were determined. It is suggested that every thermal investigation of the complexes should be based on other additional investigations such as thermal stability and solid-liquid phase diagrams.

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