Author:
Benali-Cherif Rim,Takouachet Radhwane,Bendeif El-Eulmi,Benali-Cherif Nourredine
Abstract
The crystal structure of a polymorph of 4-aminobenzoic acid (PABA), C7H7NO2, at 100 K is noncentrosymmetric, as opposed to centrosymmetric in the structures of the other known polymorphs. The two crystallographically independent PABA molecules form pseudocentrosymmetric O—H...O hydrogen-bonded dimers that are further linked by N—H...O hydrogen bonds into a three-dimensional network. The benzene rings stack in thebdirection. The CO2moieties are bent out slightly from the benzene ring plane.
Publisher
International Union of Crystallography (IUCr)
Subject
Materials Chemistry,Inorganic Chemistry,Physical and Theoretical Chemistry,Condensed Matter Physics
Cited by
21 articles.
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