title: 4-(4-Pyrid-yl)pyridinium perchlorate methanol solvate.
abstract: In the cation of the title hydrated molecular salt, C(10)H(9)N(2) (+)·ClO(4) (-)·CH(3)OH, the dihedral angle formed by the pyridine rings is 28.82 (15)°. The crystal structure is stabilized by inter-molecular N-H⋯O and O-H⋯N hydrogen bonds and π-π stacking inter-actions, with centroid-to-centroid distances of 3.5913 (7) and 3.6526 (7) Å. Three O atoms of the perchlorate anion are disordered over two positions with refined occupancy factors of 0.649 (7):0.351 (7).
authors.affiliation: School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, People's Republic of China.
authors.forename: Yu-Hua
authors.initials: YH
authors.lastname: Gao
authors.forename: De-Ming
authors.initials: DM
authors.lastname: Wu