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 6
Space-filling plots showing [R_4^4(16)]

ring motifs of (a) L-cysteine-I at ambient pressure, (b) L-cysteine-I at 1.8 GPa and (c) L-cysteine-III at 2.6 GPa. Note the hole in the middle of the ring becomes progressively smaller on going from (a) to (c). In all three diagrams, the —CH₂SH group has been removed for clarity.

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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