4-[4-Amino-5-(4-pyridyl)-4H-1,2,4-triazol-3-yl]pyridinium 2,4,5-tricarboxybenzoate.

The solution reaction of 4-amino-3,5-bis(4-pyridyl)-1,2,4-triazole (bpt), benzene-1,2,4,5-tetracarboxylic acid (H4betc) and Co(NO3)2·6H2O led to the formation of the title cocrystal compound Hbpt·H3betc or C12H11N6+·C10H5O8-, in which strong hydrogen-bonding interactions assemble the ions into a three-dimensional supramolecular framework. [ABSTRACT FROM AUTHOR]