title: Comparison of the methyl ester of L-tyrosine hydrochloride and its methanol monosolvate.
abstract: Solvent-free (2S)-methyl 2-ammonio-3-(4-hydroxyphenyl)propionate chloride, C10H14NO3+.Cl-, (I), and its methanol solvate, C10H14NO3+.Cl-.CH3OH, (II), are obtained from different solvents: crystallization from ethanol or propan-2-ol gives the same solvent-free crystals of (I) in both cases, while crystals of (II) were obtained by crystallization from methanol. The structure of (I) is characterized by the presence of two-dimensional layers linked together by N-H...Cl and O-H...Cl hydrogen bonds and also by C-H...O contacts. Incorporation of the methanol solvent molecule in (II) introduces additional O-H...O hydrogen bonds linking the two-dimensional layers, resulting in the formation of a three-dimensional network.
authors.affiliation: Faculty of Chemistry, University of Wrocław, 14 Joliot-Curie Street, 50-383 Wrocław, Poland.
authors.forename: Iwona
authors.initials: I
authors.lastname: Bryndal
authors.forename: Mariusz
authors.initials: M
authors.lastname: Jaremko
authors.forename: Łukasz
authors.initials: Ł
authors.lastname: Jaremko
authors.forename: Tadeusz
authors.initials: T
authors.lastname: Lis
mesh_terms: D018360:Crystallography, X-Ray; D004952:Esters; D006860:Hydrogen Bonding; D000432:Methanol / Q000737:chemistry*; D008958:Models, Molecular; D014443:Tyrosine / Q000737:chemistry*
chemical_list: D004952:Esters; D014443:Tyrosine; D000432:Methanol