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In the crystal structure of the title compound, C(6)H(4)N(2)·C(6)H(2)Cl(2)O(4), two chloranilic acid (systematic name: 2,5-dichloro-3,6-dihydr-oxy-1,4-benzoquinone) mol-ecules are connected by O-H⋯O hydrogen bonds to form a dimeric unit. The pyridine-4-carbonitrile mol-ecules are linked on both sides of the dimer via N⋯H⋯O hydrogen bonds to give a… (More)
In the crystal structure of the title salt, C(6)H(6)NO(2) (+)·C(6)HCl(2)O(4) (-), the pyridine ring and the mean plane of the hydrogen chloranilate anion form a dihedral angle of 77.40 (8)°. The ionic components are held together by N-H⋯O and O-H⋯O hydrogen bonds, forming a supra-molecular ladder. C-H⋯O inter-actions are also present.