Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 1 (January 2012)


organic compounds



bt5723 scheme

Acta Cryst. (2012). E68, o43    [ doi:10.1107/S1600536811051506 ]

2',6'-Bis(4-carboxyphenyl)-4,4'-bipyridin-1-ium nitrate 0.25-hydrate

Y. Li, H. Zang and G. Su

Abstract: In the title compound, C24H17N2O4+·NO3-·0.25H2O, the central pyridine ring of the 2',6'-bis(4-carboxyphenyl)-4,4'-bipyridin-1-ium cation is almost coplanar with one benzene ring [dihedral angle = 1.03 (5)°], while it makes dihedral angles of 9.59 (5)° with the other benzene ring and 13.66 (6)° with the pyridinium ring. In the crystal, N-H...O and O-H...O hydrogen bonds link the cations and nitrate anions into a sheet in the (302) plane. The crystal structure also exhibits [pi]-[pi] interactions between the central pyridine ring and the benzene rings of neighboring molecules [centroid-centroid distance = 3.6756 (13) Å].


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