Hemamalini M, Fun HK. Bis(2-amino-4-methylpyridinium) terephthalate tetrahydrate.
Acta Crystallogr Sect E Struct Rep Online 2010;
66:o1925-6. [PMID:
21588255 PMCID:
PMC3007316 DOI:
10.1107/s1600536810025651]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Accepted: 06/30/2010] [Indexed: 11/23/2022]
Abstract
In the crystal structure of the title salt, 2C6H9N2+·C8H4O42−·4H2O, the terephthalate carboxylate groups interacts with the 2-amino-4-methylpyridinium cations via a pair of N—H⋯O hydrogen bonds, forming an R22(8) ring motif. The water molecules form an R66(12) ring motif through O—H⋯O hydrogen bonds and these motifs are fused, forming a supramolecular chain along the c axis. The R22(8) and R66(12) ring motifs are connected via O—H⋯O hydrogen bonds. In addition, π–π stacking interactions are observed between the pyridinium rings [centroid–centroid distance = 3.522 (12) Å].
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