Abstract
A second metastable form of the title compound, C12H13N3(systematic name: 4,6-dimethyl-N-phenylpyrimidin-2-amine), was isolated from an attempted co-crystallization experiment withmeso-erythriol in dimethyl sulfoxide (DMSO). The crystals of form 2 at 120 K are monoclinic, space groupP21/nwithZ′ = 4 compared to the previously reported triclinic form withZ′ = 2 [Sunet al.(2011).Acta Chim. Sin.69, 1909–1914]. The four independent molecules in the asymmetric unit form two discrete dimeric units through a concerted pair of N—H...N hydrogen bonds with a graph-set notation ofR22(8). The origin of the polymorphic behaviour is revealed in that the conformation of each dimer present in the asymmetric unit of the structure is unique and determined by the rotation of the second molecule in the dimer with respect to the first.
Publisher
International Union of Crystallography (IUCr)
Subject
Condensed Matter Physics,General Materials Science,General Chemistry
Reference11 articles.
1. Buhmann, U., Westermann, J., Baumert, D., Pieroh, E., Cliff, G. R. & Richards, I. C. (1988). US Patent US4783459.
2. The Cambridge Structural Database
3. 2-Anilino-4,6-dimethylpyrimidinium p-toluenesulfonate
4. 2-Anilino-4,6-dimethylpyrimidinium chloroacetate
5. Mercury CSD 2.0– new features for the visualization and investigation of crystal structures
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