Date Published: May 01, 2012
Publisher: International Union of Crystallography
Author(s): Meng Ting Han.
In the title molecular salt, 2C6H11NH3+·C8H4O42−, the terephthalate dianion is close to being planar (r.m.s. deviation = 0.049 Å). In the crystal, the cations and anions are linked by N—H⋯O hydrogen bonds into (010) sheets. Of the four terephthalate O atoms, two accept two hydrogen bonds each and two accept one hydrogen bond each.
For background to molecular ferroelectric materials, see: Haertling et al. (1999 ▶); Homes et al. (2001 ▶). For the synthesis of related compounds, see: Fu et al. (2009 ▶); Hang et al. (2009 ▶).