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4-Di­methyl­amino­pyridinium-1-squarate

✍ Scribed by Kolev, Tsonko ;Yancheva, Denitsa ;Schürmann, Markus ;Kleb, Dirk-Christian ;Preut, Hans ;Spiteller, Michael

Publisher
International Union of Crystallography
Year
2002
Tongue
English
Weight
163 KB
Volume
58
Category
Article
ISSN
1600-5368

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✦ Synopsis

Single-crystal X-ray study T = 291 K Mean '(C±C) = 0.002 A Ê R factor = 0.037 wR factor = 0.086 Data-to-parameter ratio = 15.0 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.

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In the title compound, C 15 H 15 Cl 2 N 2 O + ÁBr À , the angle between the least-squares planes of the dichlorophenyl moiety and the pyridine ring is 20.23 (9) . The molecular packing is mainly in¯uenced by intermolecular CÐHÁ Á ÁBr hydrogen-bond interactions. The molecules form an extended chain a

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The asymmetric unit of (I), showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 50% probability level. H atoms are shown as circles of arbitrary radii.