High-pressure polymorphism in l-cysteine: the crystal structures of l-cysteine-III and l-cysteine-IV

Moggach, S.A.; Allan, D.R.; Clark, S.J.; Gutmann, M.J.; Parsons, S.; Pulham, C.R.; Sawyer, L.

doi:10.1107/S0108768105038802

Acta Crystallographica Section B
Acta Crystallographica
Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS

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Figure 1
(a) The chemical structure of L-cysteine in its zwitterionic form. Displacement ellipsoid plots showing numbering schemes for (b) L-cysteine-I (at ambient pressure and ambient temperature), (c) L-cysteine-III and (d)/(e) L-cysteine-IV. All displacement ellipsoids are drawn at 30% probability. Note (d) and (e) are referred to in the text as molecules 2 and 1, respectively.

STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS

ISSN: 2052-5206

Volume 62| Part 2| March 2006| Pages 296-309

doi:10.1107/S0108768105038802

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