2-aminopyridinium-fumarate-fumaric acid (2/1/1)

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Buyukgungor O., Odabasoglu M., Albayrak C., Lonnecke P.

ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY, vol.60, 2004 (SCI-Expanded)

• Publication Type: Article / Article
• Volume: 60
• Publication Date: 2004
• Doi Number: 10.1107/s0108270104010546
• Journal Name: ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY
• Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED)
• Ondokuz Mayıs University Affiliated: No

Abstract

The title complex, 2C(5)H(7)N(2)(+).C4H2O42-.C4H4O4, contains cyclic eight-membered hydrogen-bonded rings involving 2-aminopyridinium and fumarate ions. The fumaric acid molecules and fumarate ions lie on inversion centers and are linked into zigzag chains by O - H ... O hydrogen bonds. The dihedral angle between the pyridinium ring and the hydrogen-bonded fumarate ion is 7.60 (4)degrees. The fumarate anion is linked to the pyridinium cations by intermolecular N - H ... O hydrogen bonds. The heterocycle is fully protonated, thus enabling amine-imine tautomerization.