2-[3-(Pyridin-1-ium-2-yl)-1H-pyrazol-1-yl]-6-[3-(pyridin-2-yl) -1H-pyrazol-1-yl]pyridinium sulfate methanol monosolvate

Abstract

The title solvated salt, C21H17N72+·SO42-·CH3OH, was obtained when we attempted to prepare the complex of ferrous sulfate and 2,6-bis[3-(pyridin-2-yl)-1H-pyrazol-1-yl]pyridine in methanol. The dihedral angles between adjacent pyridine and pyrazole rings range from 3.8 (1) to 13.4 (1)°. An intramolecular N - H⋯N hydrogen bond occurs. In the crystal, N - H⋯O and O - H⋯N hydrogen bonds between solvent methanol molecules and the cations generate zigzag chains along [110].