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  • Title: Hydrogen-bonding patterns in 2-amino-4,6-dimethylpyrimidinium hydrogen sulfate.
    Author: Hemamalini M, Muthiah PT, Rychlewska U, Plutecka A.
    Journal: Acta Crystallogr C; 2005 Feb; 61(Pt 2):o95-7. PubMed ID: 15695921.
    Abstract:
    In the title compound, C6H10N3+.HSO4-, the asymmetric unit consists of a hydrogen sulfate anion and a 2-amino-4,6-dimethylpyrimidinium cation. The hydrogen sulfate anions self-assemble through O-H...O hydrogen bonds, forming supramolecular chains along the b axis, while the organic cations form base pairs via N-H...N hydrogen bonds. The aminopyrimidinium cations join to the sulfate anions via a pair of hydrogen bonds donated from the pyrimidinium protonation site and from the exo amine group cis to the protonated site.
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