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Acta Cryst. (2012). E68, o3227-o3228
[ doi:10.1107/S1600536812043899 ]

DL-Tyrosinium chloride dihydrate

F. Guenifa, L. Bendjeddou, A. Cherouana, S. Dahaoui and C. Lecomte

Abstract: In the title compound, C9H12NO3+·Cl-·2H2O, the cation has a protonated amino group resulting from proton transfer from chloridric acid. The structure displays double layers parallel to the [010] direction held together by N-H...O, N-H...Cl, O-H...O and O-H...Cl hydrogen bonds. These layers are stacked along the c axis at b = 1/2; within each layer, the tyrosinium cations are arranged in an alternating head-to-tail sequence, forming inversion dimers [R22(10) motif]. The water molecules allow for the construction of a three-dimensional hydrogen-bonded network formed by centrosymmetric R66(28) and R88(34) motifs.

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