Bis(2-amino-3-carb-oxy-pyridinium) sulfate trihydrate.

ABSTRACT: In the title compound, 2C(6)H(7)N(2)O(2) (+)·SO(4) (2-)·3H(2)O, there are two independent cations which are connected into N-H⋯O hydrogen-bonded dimers. In the crystal, O-H⋯O hydrogen-bonded sulfate-water sheets run parallel to (001) and are linked into a three-dimensional network via inter-molecular N-H⋯O and O-H⋯O hydrogen bonds through the 2-amino-nicotinium dimers. Further stabilization is provided by weak inter-molecular C-H⋯O hydrogen bonds. R(4) (3)(10) and R(2) (2)(8) graph-set rings are observed. The crystal studied was an inversion twin with refined components of 0.45 (6) and 0.55 (6).

SUBMITTER: Berrah F 

PROVIDER: S-EPMC3099893 | biostudies-literature | 2011 Apr

REPOSITORIES: biostudies-literature