Acta Cryst. (2013). E69, o529 [ doi:10.1107/S160053681300648X ]
Abstract: A charge-assisted hydrogen-bonding network involving N-HO and O-HO hydrogen bonds stabilizes the crystal of the title salt, C5H8N3+·H2PO4-. The dihydrogen phosphate anions form one-dimensional chains along , via O-HO hydrogen bonds. The 2-amino-4-methylpyrimidinium cations are linked to these chains by means of two different kinds of N-HO hydrogen bonds. Neighbouring chains are linked via C-HN and C-HO hydrogen bonds forming two-dimensional slab-like networks lying parallel to (01-1).
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