Abstract

In the title compound, C6H16N4O2 +·C2F3O2 −, the amino acid exists as a zwitterionic argininium cation, with positively charged amino and guanidinium groups and a negatively charged carboxylate group. The trifluoroacetic acid molecule is deprotonated. The stoichiometry between the argininium ion and the trifluoroacetate anion is 1:1. The aggregation of argininium cations and trifluoroacetate anions is strikingly similar to those observed in the 1:2 stoichiometric analogue.

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