title: Bis(2-amino-6-methyl-pyridinium) tetra-chloridocuprate(II).
abstract: The title compound, (C(6)H(9)N(2))(2)[CuCl(4)], contains a distorted tetra-hedral [CuCl(4)](2-) anion and two protonated amino-pyridinium cations. The geometries of the protonated amino-pyridinium cations reveal amine-imine tautomerism. The crystal packing is influenced by N-H⋯Cl and C-H⋯Cl hydrogen bonds and π-π stacking inter-actions [centroid-centroid distances = 3.635 (4) and 3.642 (4)°].
authors.forename: Jiang
authors.initials: J
authors.lastname: Gong
authors.forename: Gang
authors.initials: G
authors.lastname: Chen
authors.forename: Shi-Feng
authors.initials: SF
authors.lastname: Ni
authors.forename: Yong-Yao
authors.initials: YY
authors.lastname: Zhang
authors.forename: Hai-Bin
authors.initials: HB
authors.lastname: Wang