2-Aminonicotinic acid.

@article{Dobson19972AminonicotinicA,
  title={2-Aminonicotinic acid.},
  author={Allison J. Dobson and R. E. Gerkin},
  journal={Acta crystallographica. Section C, Crystal structure communications},
  year={1997},
  volume={53 ( Pt 10)},
  pages={
          1427-9
        }
}
  • A. Dobson, R. E. Gerkin
  • Published 15 October 1997
  • Materials Science, Chemistry
  • Acta crystallographica. Section C, Crystal structure communications
2-Aminonicotinic acid, C6H6N2O2, crystallized in the centrosymmetric space group P2(1)/c in the zwitterionic form. Intermolecular N--H...O hydrogen bonds with N...O distances of 2.652 (2) and 2.807 (2) A link molecules into two sets of zigzag chains propagating along the b axis. The two sets of chains are crosslinked by C--H...O interactions. The dihedral angle between the planes of adjacent molecules in a chain is 9.77 (7) degrees. An intramolecular N--H...O hydrogen bond is also present. 
6 Citations
Bis(2-amino-3-carboxypyridinium) sulfate trihydrate
TLDR
In the title compound, 2C6H7N2O2 +·SO4 2−·3H2O, there are two independent cations which are connected into N—H⋯O hydrogen-bonded dimers which are linked into a three-dimensional network via intermolecular N-O-O hydrogen bonds through the 2-aminonicotinium dimers.
The crystal structure of 2-amino-3-carboxypyridin-1-ium iodide hemihydrate, C6H8IN2O2.5
  • Guang Huang
  • Chemistry
    Zeitschrift für Kristallographie - New Crystal Structures
  • 2021
Abstract C6H8IN2O2.5, monoclinic, P2/n (no. 13), a = 9.8300(4) Å, b = 5.3338(2) Å, c = 17.4040(8) Å, β = 105.493(2)°, V = 879.36(6) Å3, Z = 2, R gt (F) = 0.0139, wR ref(F 2) = 0.0306, T = 150(2) K.