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(R)-1-Phenyl-ethyl-ammonium trifluoro-acetate.


ABSTRACT: 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 carboxyl-ate 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 supra-molecular network by sharing the strongest N-H?O bond. Edge-sharing motifs lie on the twofold screw axis parallel to [010], and anti-parallel 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-phenyl-ethyl-amine with achiral monocarboxylic acids, confirming that these ionic salts are particularly robust supra-molecular heterosynthons useful in crystal engineering.

SUBMITTER: Hernandez Linares MG 

PROVIDER: S-EPMC2979250 | biostudies-other | 2010

REPOSITORIES: biostudies-other

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(R)-1-Phenyl-ethyl-ammonium trifluoro-acetate.

Hernández Linares María-Guadalupe MG   Guerrero Luna Gabriel G   Bernès Sylvain S  

Acta crystallographica. Section E, Structure reports online 20100421 Pt 5


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 carboxyl-ate 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 supra-molecular network by sharing the strongest N-H⋯O bond. Edge-sharing motifs lie on the twofold screw axis parallel to [010], and anti-parallel packing o  ...[more]

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