Title of article :
Crystal structure of (R,S)-2-hydroxy-4-(methylsulfanyl)butanoic acid
Author/Authors :
Mawhinney, Thomas P. Department of Biochemistry - University of Missouri, USA , Li, Yiyi Experiment Station Chemical Laboratories - University of Missouri USA , Chance, Deborah L. Department of Molecular Microbiology and Immunology - University of Missouri, USA , Kelley, Steven P. Department of Chemistry - University of Missouri, USA , Mossine, Valeri V. Department of Biochemistry - University of Missouri, USA
Abstract :
The title compound, a major animal feed supplement, abbreviated as HMTBA and alternatively called DL-methionine hydroxy analogue, C5H10O3S, (I), was isolated in pure anhydrous monomeric form. The melting point is 302.5 K and the compound crystallizes in the monoclinic space group P21/c, with two conformationally non-equivalent molecules [(IA) and (IB)] in the asymmetric unit. The crystal structure is formed by alternating polar and non-polar layers running along the bc plane and features an extensive hydrogen-bonding network within the polar layers. The Hirshfeld surface analysis revealed a significant contribution of non-polar H⋯H and H⋯S interactions to the packing forces for both molecules.
Keywords :
crystal structure , methionine hydroxy analog , 2-hydroxy-4-(methylsulfanyl)butanoic acid , CAS 583–91-5 , hydrogen bonding
Journal title :
Acta Crystallographica Section E: Crystallographic Communications
