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Figure 4
The crystal packing of (3)[link], form II, viewed approximately along [010]. H atoms have been omitted for clarity. Dashed lines indicate hydrogen bonds. The 2-amino­pyridinium–fumarate hydrogen-bonded trimers are shown in darker grey (blue in the electronic version of the paper) and the fumaric acid mol­ecules are shown in lighter grey (red).

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 69| Part 8| July 2013| Pages 896-900
doi:10.1107/S0108270113017423
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