title: 1,1'-(Butane-1,4-di-yl)dipyridinium dibromide dihydrate.
abstract: The organic cation in the title compound, C(14)H(18)N(2) (2+)·2Br(-)·2H(2)O, is situated on an inversion centre. The cations, anions and water mol-ecules are linked via O-H⋯Br, C-H⋯Br and C-H⋯O hydrogen bonds, and π-π stacking inter-actions between adjacent pyridine rings, with a centroid-centroid separation of 3.8518 (17) Å.
authors.forename: Ming-Qiang
authors.initials: MQ
authors.lastname: Wu
authors.forename: Xin
authors.initials: X
authors.lastname: Xiao
authors.forename: Yun-Qian
authors.initials: YQ
authors.lastname: Zhang
authors.forename: Sai-Feng
authors.initials: SF
authors.lastname: Xue
authors.forename: Qian-Jiang
authors.initials: QJ
authors.lastname: Zhu