1,4-Diazo­niabicyclo­[2.2.2]octane bis­(2-chloro­benzoate)

The title compound, C(6)H(14)N(2) (2+)·2C(7)H(4)ClO(2) (−), contains trimeric units linked by N—H⋯O hydrogen bonds. The carboxyl­ate groups of the 2-chloro­benzoate anions form dihedral angles of 66.1 (1) and 76.1 (1)° with the respective chloro­benzene rings to which they are bound. The hydrogen-bonded trimers are arranged in layers in the (200) planes and the chloro­benzoate anions form edge-to-face inter­actions between layers, with dihedral angles of 61.9 (1) and 49.8 (1)° and centroid–centroid distances of 4.85 (1) and 4.65 (1) Å, respectively, for two crystallographically distinct inter­actions.