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The title compound, C8H12N+·C14H13O3−, is the less soluble diastereomeric salt of 2-hydroxy­meth­yl-2-(2-naphth­yl)­propanoic acid with ( R)-(+)-phenyl­ethyl­amine. The ammonium group of the cation and the carboxyl­ate group of the anion are linked via N—H⋯O hydrogen bonds, forming ribbons along the b axis. [ABSTRACT FROM AUTHOR]

In the title compound, C7H10N+·C7H3N2O6−, the ammonium group of the cation and the carboxyl­ate group of the anion are connected via hydrogen bonds, forming columns along the b axis. [ABSTRACT FROM AUTHOR]

In the title compound, C7H10NO2+·C7H3N2O6−·H2O, the aromatic rings of the cation and anion are stacked alternately along the a axis. The ammonium group of the cation, the carboxyl­ate moiety of the anion and a water mol­ecule of crystallization are connected via N—H⋯O and O—H⋯O hydrogen bonds, forming hydro­philic columns along the c axis. [ABSTRACT FROM AUTHOR]

In the title compound, NH4+.C10H903 bimolecular layers of the anions are formed between layers of the cations. There are N-H…O hydrogen bonds between the ammonium ion and the carboxylate groups of the anions. In the crystal structure, the C=C moiety of the cinnamate ion makes an angle of 117.1 (2)° with that of the nearest neighbour, indicating that a pedal rotation is required before βtype [2+2]-photo-dimerization can take place, which is the predominant mode of the photochemistry of this compound. [ABSTRACT FROM AUTHOR]