Studies on Picrate. VIII. Crystal and Molecular Structures of Aromatic Amine Picrates : Aniline, N-Methylaniline, N, N-Dimethylaniline and o-, m- and p-Phenylenediamine Picrates

Abstract

The crystal and molecular structures of the title compounds have been elucidated by X-ray structure analysis.All compounds are formed through ionic and hydrogen bondings in the crystal state. The picrates of N-methylanine and m-phenylenediamine have additional π-bondings. The picrates are 1 : 1 complex except for o-phenylenediamine picrate, in which the picrate consists of one o-phenylenediamine and two picric acid molecules.