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(R)-1-Phenylethylammonium trifluoroacetate
In the crystal structure of the title salt, C(8)H(12)N(+)·C(2)F(3)O(2) (−), all of the ammonium H atoms serve as donors for hydrogen bonds to carboxylate O atoms, forming an R (4) (3)(10) ring motif based on two cations and two anions. Since both cations and anions act as inter-ion bridging groups,...
Autores principales: | , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2010
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2979250/ https://www.ncbi.nlm.nih.gov/pubmed/21579169 http://dx.doi.org/10.1107/S1600536810013565 |
Sumario: | In the crystal structure of the title salt, C(8)H(12)N(+)·C(2)F(3)O(2) (−), all of the ammonium H atoms serve as donors for hydrogen bonds to carboxylate O atoms, forming an R (4) (3)(10) ring motif based on two cations and two anions. Since both cations and anions act as inter-ion bridging groups, R(10) rings aggregate in a one-dimensional supramolecular network by sharing the strongest N—H⋯O bond. Edge-sharing motifs lie on the twofold screw axis parallel to [010], and antiparallel packing of these 2(1)-column structural units results in the crystal structure. This arrangement is one of the most commonly occurring in conglomerates of chiral 1-phenylethylamine with achiral monocarboxylic acids, confirming that these ionic salts are particularly robust supramolecular heterosynthons useful in crystal engineering. |
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