Crystal structure of a new polymorph of (2S,3S)-2-amino-3-methyl-penta-noic acid.

ABSTRACT: A new polymorph of (2S,3S)-2-amino-3-methyl-penta-noic acid, l-isoleucine C₆H₁₃NO₂, crystallizes in the monoclinic space group P2₁ with four independent mol-ecules in the asymmetric unit. The mol-ecules are zwitterions. In the crystal, N-H⋯O hydrogen bonds link two pairs of independent mol-ecules and their symmetry-related counterparts to form two types of layers stacked in an anti-parallel manner parallel to (001). The hydro-phobic aliphatic isopropyl groups protrude from these layers.

SUBMITTER: Curland S 

PROVIDER: S-EPMC6002834 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature