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Acta Crystallogr C. 2004 Dec;60(Pt 12):o868-71. Epub 2004 Nov 11.

L-Methioninium chloride and L-selenomethioninium chloride at 103 K.

Author information

1
University of Virginia, Department of Molecular Physiology and Biological Physics, 1300 Jefferson Park Avenue, Charlottesville, VA 22908, USA.

Abstract

The crystal structures of the title compounds, (S)-1-carboxy-3-(methylsulfanyl)propanaminium chloride, C(5)H(12)NO(2)S(+).Cl(-), and (S)-1-carboxy-3-(methylselanyl)propanaminium chloride, C(5)H(12)NO(2)Se(+).Cl(-), are isomorphous. The protonated L-methionine and L-selenomethionine molecules have almost identical conformations and create very similar contacts with the Cl(-) anions in the crystal structures of both compounds. The amino acid cations and the Cl(-) anions are linked viaN-H...Cl(-) and O-H...Cl(-) hydrogen bonds.

PMID:
15579969
DOI:
10.1107/S0108270104025223
[Indexed for MEDLINE]

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