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Figure 3
A view of the crystal structure of (3)[link], form II, showing the hydrogen-bonding scheme (dashed lines). One 2-amino­pyridinium–fumarate hydrogen-bonded trimer is outlined with a rectangle. H atoms not involved in hydrogen bonding have been omitted for clarity. The 2-amino­pyridinium cations are shown in lightest grey (green in the electronic version of the paper), fumarate dianions in medium grey (red) and free fumaric acid mol­ecules in darkest grey (blue).

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