Cukrowski, IgnacyAdeyinka, Adedapo S.Liles, David C.2013-03-202013-03-202012-07-02Cukrowski, I, Adeyinka, AS & Liles, DC 2012, '2,2'-(Piperazine-1,4-diyl)diethanaminium dibenzoate', Acta Crystallographica Section E-Structure Reports Online, vol. E68, no. o2389, pp. sup-1-8.1600-536810.1107/S1600536812030115http://hdl.handle.net/2263/21195Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: JJ2134).The asymmetric unit of the title salt C8H22N4 2+2C7H5O2 , comprises two independent pairs of half a 2,2'-(piperazine-1,4- diyl)diethanaminium dication plus a benzoate anion. The dications are symmetrical and lie across crystallographic centres of inversion. The crystal structure was refined as a two-component pseudo-merohedral twin using the twin law 001 010 100 [he domain fractions are 0.8645 (8) and 0.1355 (8)]. The anions and cations are linked by N—H...O hydrogen bonds and weak N—H...O intermolecular interactions to form infinite two-dimensional networks parallel to [101]. The conformation adopted by the cation in the crystal structure is very similar to that adopted by the same cation in the structures of the 2-hydroxybenzoate [Cukrowski et al. (2012). Acta Cryst, E68, o2387], the nitrate and the tetrahydrogen pentaborate salts.enInternational Union of CrystallographySingle-crystal X-ray studyT = 180 KMean (C–C) = 0.002 AR factor = 0.040wR factor = 0.110Data-to-parameter ratio = 17.9CrystallizationCrystalsCrystallographyArticle