2,6-Diaminopyridinium Hydrogen Fumarate

Abstract

The title compound, C<inf>5</inf>H<inf>2</inf>N<inf>3</inf> +·C<inf>4</inf>H<inf>3</inf>O<inf>4</inf>-, contains edge-fused [R<inf>2</inf>1(6)R<inf>2</inf> 2(8)R<inf>2</inf>2(8)R<inf>6</inf>5(26)R <inf>2</inf>1(6)] motifs involving 2,6-diaminopyridinium and hydrogen fumarate ions. In these motifs, 2,6-diaminopyridinium and hydrogen fumarate ions are connected by N-H⋯N, N-H⋯O and O-H⋯O hydrogen bonds. © 2006 International Union of Crystallography. All rights reserved.