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

A new polymorph of (2 ,3 )-2-amino-3-methyl-penta-noic acid, l-isoleucine C H NO , crystallizes in the monoclinic space group 2 with four independent mol-ecules in the asymmetric unit. The mol-ecules are . In the crystal, N-H⋯O hydrogen bonds link two pairs of independent mol-ecules and their symmet...

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Bibliographic Details
Published in:Acta crystallographica. Section E, Crystallographic communications Crystallographic communications, 2018-06, Vol.74 (Pt 6), p.776-779
Main Authors: Curland, Sofia, Meirzadeh, Elena, Diskin-Posner, Yael
Format: Article
Language:English
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Research Communications
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Summary:A new polymorph of (2 ,3 )-2-amino-3-methyl-penta-noic acid, l-isoleucine C H NO , crystallizes in the monoclinic space group 2 with four independent mol-ecules in the asymmetric unit. The mol-ecules are . 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 manner parallel to (001). The hydro-phobic aliphatic isopropyl groups protrude from these layers.
ISSN:2056-9890
2056-9890
DOI:10.1107/S2056989018006126