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Tetrakis(tert-butylammonium) benzene-1,2,4,5-tetracarboxylate octahydrate

✍ Scribed by Ejsmont, Krzysztof ;Zaleski, Jacek

Publisher
International Union of Crystallography
Year
2007
Tongue
English
Weight
763 KB
Volume
63
Category
Article
ISSN
1600-5368

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✦ Synopsis

In the crystal structure of the title compound, 4C~4~H~12~N^+^·C~10~H~2~O~8~
^4−^·8H~2~O, there is a centre of symmetry at the centre of the benzene ring; the asymmetric unit comprises one half-anion, two cations and four water molecules. The pyromellitate tetraanion is nonplanar; it and the cations exhibit normal geometry. The two unique carboxylate groups are twisted out of the plane of the benzene ring by about 40 and 50°. The network formed by the ions and water molecules is based on eight O—H...O and six N—H...O strong hydrogen bonds.

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Single-crystal X-ray study T = 295 K Mean '(C±C) = 0.004 A Ê R factor = 0.040 wR factor = 0.105 Data-to-parameter ratio = 14.0 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.