The crystal of the title compound, 2,2′-bipyridinium trihydrogen-1,2,4,5-benzenetetracarboxylate trihydrate, C
10H
9N
2+·C
10H
5O
8-·3H
2O, is built of a 2,2′-bipyridinium cation, a trihydrogen-1,2,4,5-benzenetetracarboxylate anion and three water molecules. It crystallizes in triclinic, space group
P1 with
a = 9.6528(15),
b = 9.6823(15),
c = 12.0799(19)Å,
α = 89.625(2),
β = 72.672(2),
γ = 72.316(2)°,
V = 1022.5(3)Å
3,
Z = 2. Both O-H…O and N-H…O hydrogen bonds were observed in the crystal lattice, which contributes to the stability of the structure.
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