Title of article :
Hydrogen-bonded network in the salt 4-methyl-1H-imidazol-3-ium picrate
Author/Authors :
Song, Xue-gang College of Chemistry - Central China Normal University, People’s Republic of China , Su, Ping College of Chemistry - Central China Normal University, People’s Republic of China , Xu, Xing-man College of Chemistry - Central China Normal University, People’s Republic of China
Abstract :
In the title molecular salt, C4H7N2+·C6H2N3O7−, the phenolic proton of the starting picric acid has been transferred to the imidazole N atom. The nitro groups are twisted away from the benzene ring plane, making dihedral angles of 12.8 (2), 9.2 (4) and 29.3 (2)°. In the crystal, the component ions are linked into chains along [010] via N—H⋯O and bifurcated N—H⋯(O,O) hydrogen bonds. These chains are further linked by weak C—H⋯O hydrogen bonds into a three-dimensional network. The complex three-dimensional network can be topologically simplified into a 4-connected uninodal net with the point symbol {4.85}.
Keywords :
uninodal {42.85} net , picric acid , 4-methyimidazole , salt , crystal structure
Journal title :
Acta Crystallographica Section E: Crystallographic Communications
