Solid state reactions of quinones with 2-amino-, 3-amino- and 4-amino-benzoic acids and durene

Abstract

2-Amino-, 3-amino- and 4-amino-benzoic acids react with <em>p</em>-benzoquinone but not with chloranil while durene reacts with chloranil and not with <em>p</em>-benzoquinone to give charge transfer complexes in the solid state reactions. The kinetics follow the rate law ξ² = <em>k</em>t (where <em>k </em>is the rate constant). The order of reactivities in aminobenzoic acids is: 2- > 4- > 3-. The reactions are diffusion-controlled; the more volatile reactant always diffuses via vapour phase and the other through grain boundaries.