3-Aminopyrazine-2-carboxylic acid.

@article{Dobson19963Aminopyrazine2carboxylicA,
  title={3-Aminopyrazine-2-carboxylic acid.},
  author={Allison J. Dobson and R. E. Gerkin},
  journal={Acta crystallographica. Section C, Crystal structure communications},
  year={1996},
  volume={52 ( Pt 6)},
  pages={
          1512-4
        }
}
  • A. Dobson, R. E. Gerkin
  • Published 15 June 1996
  • Chemistry
  • Acta crystallographica. Section C, Crystal structure communications
3-Aminopyrazine-2-carboxylic acid, C5H5N3O2, displays an extensive network of intra- and intermolecular hydrogen bonds which are undoubtedly responsible for the modest values of the displacement parameters. H-atom transfer to the ring N atoms did not occur and the carboxy and amino H atoms are ordered. The virtually planar molecules lie very nearly in planes parallel to (102) and are stacked along the a direction with separations of 3.324 (2) A indicating pi-pi interactions. 
8 Citations
Ammonium 2-aminopyrazine-3-carboxylate
  • M. Lutz, A. Jakobi
  • Chemistry, Materials Science
    Acta crystallographica. Section E, Structure reports online
  • 2011
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The title compound NH4 +·C5H4N3O2 − crystallizes with two formula units in the asymmetric unit, where the carboxylate is deprotonated and the planar amino group remains protonated.
Bis(2-amino-3-carboxypyrazin-1-ium) sulfate dihydrate
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The crystal structure of the title compound, 2C5H6N3O2 +·SO4 2−·2H2O, displays a variety of N—H⋯O and O—H–O hydrogen bonds in which all potential donors and acceptors are involved, and the resulting three-dimensional network exhibits undulating sheets parallel to (011).
Hydrogen and Halogen Bond Mediated Coordination Polymers of Chloro-Substituted Pyrazin-2-Amine Copper(I) Bromide Complexes
A new class of six mono- (1; 3-Cl-, 2; 5-Cl-, 3; 6-Cl-) and di-(4; 3,6-Cl, 5; 5,6-Cl-, 6; 3,5-Cl-) chloro-substituted pyrazin-2-amine ligands (1–6) form complexes with copper (I) bromide, to give 1D
Supramolecular compounds constructed from Keggin anions and metal–organic complex cations of 3-aminopyrazine-2-carboxylic acid
Three new supramolecular compounds based on Keggin-type polyoxometalate (POM) and transition metal complexes, [M(Hapca)2(H2O)2]2[SiW12O40]·nH2O, (M = NiII(1), ZnII(2), n = 12; CoII (3), n = 15; Hapca
Rare-earth organic frameworks involving three types of architecture tuned by the lanthanide contraction effect: hydrothermal syntheses, structures and luminescence.
TLDR
The luminescent investigations reveal that complex exhibits strong blue emission and complex exhibits characteristic luminescence of Eu(3+), the first example of rare-earth organic frameworks with 3-aminopyrazine-2-carboxylic acid (Hapca).