title: Cyclo-hexane-1,2-diammonium bis-(pyridine-2-carboxyl-ate).
abstract: In the dication of the title salt, C(6)H(16)N(2) (2+)·2C(6)H(4)NO(2) (-), the two ammonium groups are in the equatorial positions of the chair-shaped cyclo-hexyl ring. In the crystal, the cations and anions are linked by N-H⋯O and N-H⋯N hydrogen bonds, forming a layer network parallel to the ac plane. Weak π-π inter-actions between adjacent pyridine rings with a centroid-centroid distance of 3.589 (2) Å are also present.
authors.forename: Nam-Ho
authors.initials: NH
authors.lastname: Kim
authors.forename: In-Chul
authors.initials: IC
authors.lastname: Hwang
authors.forename: Kwang
authors.initials: K
authors.lastname: Ha