organic compounds
The crystal structure of the title compound, C3H10N+·BF4−, has been redetermined at 100 K and shows the BF4− anion to be ordered at this temperature. Both the anion and the cation lie on a mirror plane and they are connected by N—HF and C—HF hydrogen bonds.
organic compounds
The title compound, C6H6NO2+·C6HCl2O4−, is the salt of chloranilic acid with nicotinic acid (2-carboxypiridine), where an acid–base interaction involving a proton transfer is observed from the chloranilic acid to the pyridine group of nicotinic acid. In the crystal structure, the hydrogen chloranilate anion and the 2-carboxypridinium cation are linked by N—HO and O—HO hydrogen bonds to form a zigzag chain. The chains are further linked by O—HO hydrogen bonds to form a three-dimensional hydrogen-bond network.