C. Aakeröy, J. Desper, B. Levin
Dec 15, 2005
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Influential Citations
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Journal
Acta crystallographica. Section C, Crystal structure communications
Abstract
Two new polymorphs of 4-(N,N-dimethylamino)benzoic acid, C9H11NO2, resulting from the attempted cocrystallization in ethanol of 4-(N,N-dimethylamino)benzoic acid and a mixture of 3-(N,N-dimethylamino)benzoic acid and 3-(3-pyridyl)-2-pyridone producing one polymorph, and a mixture of 3-(N,N-dimethylamino)benzoic acid and 5-methoxy-3,3'-bipyridine producing the second polymorph, have been crystallographically characterized. The primary intermolecular O-H...O hydrogen bonds generate a dimeric acid-acid motif that is present in all three polymorphs.