title: 3-(Ammonio-meth-yl)pyridinium dibromide.
abstract: In the title salt, C(6)H(10)N(2) (2+)·2Br(-), the non-H atoms of the 3-methyl-pyridinium unit of the cation are almost coplanar (r.m.s. deviation = 0.0052 Å). In the crystal, the dications and Br anions are linked by a combination of six hydrogen bonds, viz. one N(py)-H⋯Br, two C-H⋯Br and three H(2)N-H⋯Br, into supra-molecular layers, parallel to the bc plane, composed of alternating R(2) (4)(10) and R(2) (4)(8) loops. Weak π-π inter-actions between cationic rings with centroid-centroid distances of 3.891 (2) Å are also observed.
authors.affiliation: Department of Chemistry, Al al-Bayt University, Mafraq 25113,  Jordan.
authors.forename: Basem F
authors.initials: BF
authors.lastname: Ali
authors.forename: Rawhi
authors.initials: R
authors.lastname: Al-Far
authors.forename: Salim F
authors.initials: SF
authors.lastname: Haddad