Date Published: June 01, 2012
Publisher: International Union of Crystallography
Author(s): Tausif Siddiqui, Vandavasi Koteswara Rao, Matthias Zeller, Sherri R. Lovelace-Cameron.
The asymmetric unit of the title organic salt, C2H8N+·C8H5O4−, consists of two dimethylammonium cations and two 3-carboxybenzoate anions. The 3-carboxybenzoate anions are linked via strong intermolecular and nearly symmetrical O—H⋯O hydrogen bonds forming infinite chains parallel to . Neighbouring chains are further connected by the dimethylammonium cations via N—H⋯O bonds, resulting in a double-chain-like structure. The dihedral angles of all carboxylate groups with respect to the phenylene rings are in the range 7.9 (1)–20.48 (9)°.
For supramolecular structures comprising 3-carboxybenzoates, see: Guo et al. (2010 ▶); Liu et al. (2007 ▶); Weyna et al. (2009 ▶). For similar chain-like structures, see: Ballabh et al. (2005 ▶). For hydrolysis of formamides, see: Cottineau et al. (2011 ▶); Hine et al. (1981 ▶). For a description of the Cambridge Structural Database, see: Allen (2002 ▶). For hydrogen bonding, see: Gilli & Gilli (2009 ▶).