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Tetra-methyl-ammonium hydrogen terephthalate.

ABSTRACT: The asymmetric unit of the title salt, C(4)H(12)N(+)·C(8)H(5)O(4) (-), contains one half of a tetra-methyl-ammonium cation and one half of a hydrogen terephthalate monoanion. The N atom of the ammonium cation lies on a twofold rotation axis and the centre of mass of the terephthalate anion is on a centre of inversion. In the crystal, the centrosymmetric terephthalate ions are linked by a very short symmetric O-H?O hydrogen bond [O?O = 2.4610?(19)?Å] into a one-dimensional polymeric chain along [1-12]. The tetra-methyl-ammonium cations and terephthalate anions are then connected through a pair of bifurcated acceptor C-H?O hydrogen bonds, generating a three-dimensional supra-molecular network. The carboxyl-ate groups at both ends of the terephthalate anion are charge-shared with an equal probability of 0.5.

SUBMITTER: Dolatyari L

PROVIDER: S-EPMC3470372 | biostudies-literature | 2012 Oct

REPOSITORIES: biostudies-literature

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Tetra-methyl-ammonium hydrogen terephthalate.

Dolatyari Leila L Shoghpour Bayraq Samad S Sharifi Sara S Ramazani Ali A Morsali Ali A Amiri Rudbari Hadi H

Acta crystallographica. Section E, Structure reports online 20120926 Pt 10

The asymmetric unit of the title salt, C(4)H(12)N(+)·C(8)H(5)O(4) (-), contains one half of a tetra-methyl-ammonium cation and one half of a hydrogen terephthalate monoanion. The N atom of the ammonium cation lies on a twofold rotation axis and the centre of mass of the terephthalate anion is on a centre of inversion. In the crystal, the centrosymmetric terephthalate ions are linked by a very short symmetric O-H⋯O hydrogen bond [O⋯O = 2.4610 (19) Å] into a one-dimensional polymeric chain along [ ...[more]

PMID: 23125785

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