Acta Cryst. (2005). C61, o702-o704 [doi:10.1107/S0108270105035122]
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.
Formula: Two polymorphs of C9H11NO2
 |   Structure factor file (CIF format) (97.5 kbytes) |
| Structure factor file (CIF format) (175.3 kbytes) |
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