F. Casellato, C. Vecchi, A. Girelli
Nov 1, 1977
Citations
0
Influential Citations
6
Citations
Journal
Thermochimica Acta
Abstract
Abstract Charge-transfer, crystalline complexes of 3- and 4-nitrophthalic anhydrides with a number of unsubstituted polynuclear aromatic hydrocabons were studied by differential scanning calorimetry. The 3- and 4-nitrophthalic anhydrides are complexing agents more selective than s .trinitrobenzene and pyromellitic dianhydride, and only form complexes with a few of the twelve hydrocarbons investigated. Under the adopted conditions 3-NPA forms complexes with: pyrene, 3,4-benzopyrene, and 1,2,5,6,-dibenzoanthracene; 4-NPA forms complexes with these hydrocarbons and with anthracene, phenanthrene, 1,2-benzoanthracene benzoperylene, and coronene. Though having an electron affinity close to that of s .trinitrobenzene, 4-NPA forms less stable complexes with the polynuclear aromatic hydrocarbons, due to the asymmetry and non-planarity of its molecule.