title: Bis(2-amino-4-methyl-pyridinium) bis-(pyridine-2,6-dicarboxyl-ato)cuprate(II).
abstract: The asymmetric unit of the title compound, (C(6)H(9)N(2))(2)[Cu(C(7)H(3)NO(4))(2)], contains half of a [Cu(pydc)(2)](2-) (pydcH(2) is pyridine-2,6-dicarb-oxy-lic acid) anion and one protonated 2-amino-4-methyl-pyridine (2a4mpH)(+) counter-ion. The anion is a six-coordinated complex with a distorted CuN(2)O(4) octa-hedral geometry around the Cu(II) ion. N-H⋯O and C-H⋯O hydrogen bonds along with π-π contacts between the pyridine rings of the (2a4mpH)(+) cations [centroid-centroid distance = 3.573 (2) Å] stabilize the crystal structure.
authors.forename: Hossein
authors.initials: H
authors.lastname: Aghabozorg
authors.forename: Azadeh
authors.initials: A
authors.lastname: Mofidi Rouchi
authors.forename: Behrouz
authors.initials: B
authors.lastname: Notash
authors.forename: Masoud
authors.initials: M
authors.lastname: Mirzaei