Acta Cryst. (2002). E58, o396-o398  [ doi:10.1107/S1600536802004324 ]

DL-Methioninium maleate

M. Alagar, M. Subha Nandhini, R. V. Krishnakumar and S. Natarajan

Abstract: In the title compound, C₅H₁₂NO₂S⁺·C₄H₃O₄^-, the methionine molecule exists in the cationic form and the maleic acid molecule in the mono-ionized state. In the semi-maleate ion, there is an asymmetric intramolecular hydrogen bond between the carboxy OH group and an O atom of the other carboxylate group. There are no direct hydrogen-bonded interactions among the semi-maleate anions.

Online 15 March 2002

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