Bis(tetramethylamonium) bis(2,4,5-carboxybenzoate)-benzene-1,2,4,5-tetracarboxylic acid (1/1)

resumo

The asymmetric unit of the title compound, 2C(4)H(12)N(+)center dot-2C(10)H(5)O(8)(-)center dot C10H6O8, consists of a tetramethylamonium cation, an anion derived from the singly deprotonated pyromellitic acid anion, 2,4,5-carboxybenzoate (H(3)bta(-)), and one-half of a benzene-1,2,4,5-tetracarboxylic acid (H(4)bta) molecule, which has the centroid of the aromatic ring positioned at a crystallographic centre of inversion. The H(4)bta and H(3)bta(-) residues are involved in an extensive intermolecular O-H center dot center dot center dot O hydrogen-bonding network, which leads to a three-dimensional supramolecular structure containing one-dimensional channels running parallel to the [001] crystallographic direction. These channels house the tetramethylamonium cations.

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TRIMESIC ACID

categoria

Crystallography

autores

Cunha-Silva, L; Girginova, PI; Trindade, T; Rocha, J; Klinowski, J; Paz, FAA

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