3-Dodecyloxy-2-hydroxy- N , N , N -trimethylpropan-1-aminium bromide

In the title compound, C18H40NO2+·Br−, the ion pairs formed by the hydrogen-bonded bromide anions and organic cations are arranged into thick layers with the alkyl groups directed to the inside and the trimethylaminium groups and the bromide anions situated on the layer surface. T...

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Bibliographic Details
Published inActa crystallographica. Section E, Structure reports online Vol. 65; no. 8; p. o1836
Main Authors Fu, Shizhou, Wei, Zengbin, Wei, Xilian, Wu, Tao
Format Journal Article
LanguageEnglish
Published International Union of Crystallography 01.08.2009
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Summary:In the title compound, C18H40NO2+·Br−, the ion pairs formed by the hydrogen-bonded bromide anions and organic cations are arranged into thick layers with the alkyl groups directed to the inside and the trimethylaminium groups and the bromide anions situated on the layer surface. The long alkyl chain in the cation adopts an all-trans conformation. In the crystal structure, molecules are connected by intermolecular O—H...Br hydrogen bonds, forming ionic pairs that are further connected into an extended chain structure via C—H...O hydrogen-bonding interactions. The crystal is chiral but nearly 90% of atoms in the unit cell are related by a pseudo-inversion center. The crystal shows racemic twinning with a 0.33:0.67 domain ratio.
ISSN:1600-5368
1600-5368
DOI:10.1107/S160053680902635X