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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-other | 2018 Jun

REPOSITORIES: biostudies-other

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

Curland Sofia S Meirzadeh Elena E Diskin-Posner Yael Y

Acta crystallographica. Section E, Crystallographic communications 20180501 Pt 6

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). T ...[more]

PMID: 29951228

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