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

Cunha-Silva, L.; Girginova, P.I.; Trindade, T.; Rocha, J.; Klinowski, J.; Almeida Paz, F.A.

doi:10.1107/S1600536807062381

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

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Figure 2 Schematic representation of the O—H⋯O connections between adjacent H₃bta⁻ and H₄bta residues leading to (a) R₅⁵(31) rings which are further interconnected along the [001] direction of the unit cell into (b) helical chains surrounding the channels present in the crystal structure. For geometrical details on the represented hydrogen bonds (dashed green lines) see Table 1. Symmetry transformations used to generate equivalent atoms: (i) 1 + x, y, 1 + z; (ii) 1 + x, 1/2-y, $[{1\over 2}]$ + z; (iii) -x, $[{1\over 2}]$ + y, 1/2-z.

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 64| Part 1| January 2008| Pages o69-o70

https://doi.org/10.1107/S1600536807062381

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