Crystal structures of three halide salts of l-asparagine: an isostructural series.

ABSTRACT: The structures of three monohydrated halide salt forms of l-asparagine are presented, viz. l-asparaginium chloride monohydrate, C₄H₉N₂O₃ ⁺·Cl^-·H₂O, (I), l-asparaginium bromide monohydrate, C₄H₉N₂O₃ ⁺·Br^-·H₂O, (II), and l-asparaginium iodide monohydrate, C₄H₉N₂O₃ ⁺·I^-·H₂O, (III). These form an isomorphous and isostructural series. The C-C-C-C backbone of the amino acid adopts a gauche conformation in each case [torsion angles for (I), (II) and (III) = -55.4 (2), -55.6 (5) and -58.3 (7)°, respectively]. Each cation features an intra-molecular N-H⋯O hy

SUBMITTER: de Moraes LS 

PROVIDER: S-EPMC6218909 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature