2,3-Dimethoxy-10-oxostrychnidinium 2-carboxy-4,5-dichlorobenzoate

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Smith, Graham
Wermuth, Urs D
White, Jonathan M
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2007
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Abstract

The structure of the title compound, C23H27N2O4+烸H3Cl2O4-, a 1:1 proton-transfer compound of brucine with 4,5-dichlorophthalic acid, has been determined at 130 K. The brucinium cations and the hydrogen phthalate anions associate through single N-H...Ocarboxylate hydrogen bonds [2.639 (3) ŝ, giving dimers which are extended via weak head-to-tail C-H...Omethoxy associations into chains forming down the 21 screw axis of the unit cell. The carboxyl proton of the anion gives a short intramolecular O-H...Ocarboxylate hydrogen bond [2.441 (3) ŝ.

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Acta Crystallographica Section E, Structure Reports Online

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E63

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11

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© The Author(s) 2007. For information about this journal please refer to the journal's website. All articles published in Acta Crystallographica Section E are open access and distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. See http://creativecommons.org/licenses/by/2.0/uk/legalcode

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Chemical sciences

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