title: L-Methioninium chloride and L-selenomethioninium chloride at 103 K.
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.
authors.affiliation: University of Virginia, Department of Molecular Physiology and Biological Physics, 1300 Jefferson Park Avenue, Charlottesville, VA 22908, USA.
authors.forename: Maksymilian
authors.initials: M
authors.lastname: Chruszcz
authors.forename: Marcin
authors.initials: M
authors.lastname: Cymborowski
authors.forename: Anna
authors.initials: A
authors.lastname: Gawlicka-Chruszcz
authors.forename: Shoichi
authors.initials: S
authors.lastname: Yasukawa
authors.forename: Joseph D
authors.initials: JD
authors.lastname: Ferrara
authors.forename: Wladek
authors.initials: W
authors.lastname: Minor
mesh_terms: D018360:Crystallography, X-Ray; D008715:Methionine / Q000737:chemistry*; D008958:Models, Molecular; D012645:Selenomethionine / Q000737:chemistry*
chemical_list: D012645:Selenomethionine; D008715:Methionine