Low temperature/high pressure polymorphism in dl-cysteine

Vasily S. Minkov, Nikolay A. Tumanov, Raul Quesada Cabrera, Elena V. Boldyreva

Résultats de recherche: Contribution à un journal/une revueArticle

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Résumé

We compare the response of the crystalline dl-cysteine to cooling and to increasing pressure. The structure undergoes a low-temperature phase transition into an isosymmetric polymorph, dl-cysteine-II, with the conformation of zwitterion changing from gauche- to gauche+. The first pressure-induced transition at 0.1 GPa (the lowest pressure reported for a phase transition in a crystalline amino acid thus far) gives the same polymorph. Further compression of dl-cysteine-II proceeds differently on cooling and with increasing hydrostatic pressure. dl-cysteine-II is preserved down to 3 K, but undergoes phase transitions on compression at about 1.55 GPa, and 6.20 GPa. The changes in the hydrogen bond network preceding the phase transition in dl-cysteine-II in the range 0.25-0.85 GPa differ from those observed on cooling the same structure, but resemble those preceding pressure-induced phase transitions in β- and γ-glycine.

langue originaleAnglais
Pages (de - à)2551-2560
Nombre de pages10
journalCrystEngComm
Volume12
Numéro de publication9
Les DOIs
étatPublié - août 2010
Modification externeOui

Empreinte digitale

cysteine
polymorphism
Polymorphism
Cysteine
Phase transitions
Cooling
Amino acids
cooling
Temperature
Crystalline materials
Hydrostatic pressure
zwitterions
Glycine
Conformations
glycine
Hydrogen bonds
hydrostatic pressure
amino acids
Amino Acids
low pressure

Citer ceci

Minkov, V. S., Tumanov, N. A., Cabrera, R. Q., & Boldyreva, E. V. (2010). Low temperature/high pressure polymorphism in dl-cysteine. CrystEngComm, 12(9), 2551-2560. https://doi.org/10.1039/c003617j
Minkov, Vasily S. ; Tumanov, Nikolay A. ; Cabrera, Raul Quesada ; Boldyreva, Elena V. / Low temperature/high pressure polymorphism in dl-cysteine. Dans: CrystEngComm. 2010 ; Vol 12, Numéro 9. p. 2551-2560.
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Minkov, VS, Tumanov, NA, Cabrera, RQ & Boldyreva, EV 2010, 'Low temperature/high pressure polymorphism in dl-cysteine', CrystEngComm, VOL. 12, Numéro 9, p. 2551-2560. https://doi.org/10.1039/c003617j

Low temperature/high pressure polymorphism in dl-cysteine. / Minkov, Vasily S.; Tumanov, Nikolay A.; Cabrera, Raul Quesada; Boldyreva, Elena V.

Dans: CrystEngComm, Vol 12, Numéro 9, 08.2010, p. 2551-2560.

Résultats de recherche: Contribution à un journal/une revueArticle

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N2 - We compare the response of the crystalline dl-cysteine to cooling and to increasing pressure. The structure undergoes a low-temperature phase transition into an isosymmetric polymorph, dl-cysteine-II, with the conformation of zwitterion changing from gauche- to gauche+. The first pressure-induced transition at 0.1 GPa (the lowest pressure reported for a phase transition in a crystalline amino acid thus far) gives the same polymorph. Further compression of dl-cysteine-II proceeds differently on cooling and with increasing hydrostatic pressure. dl-cysteine-II is preserved down to 3 K, but undergoes phase transitions on compression at about 1.55 GPa, and 6.20 GPa. The changes in the hydrogen bond network preceding the phase transition in dl-cysteine-II in the range 0.25-0.85 GPa differ from those observed on cooling the same structure, but resemble those preceding pressure-induced phase transitions in β- and γ-glycine.

AB - We compare the response of the crystalline dl-cysteine to cooling and to increasing pressure. The structure undergoes a low-temperature phase transition into an isosymmetric polymorph, dl-cysteine-II, with the conformation of zwitterion changing from gauche- to gauche+. The first pressure-induced transition at 0.1 GPa (the lowest pressure reported for a phase transition in a crystalline amino acid thus far) gives the same polymorph. Further compression of dl-cysteine-II proceeds differently on cooling and with increasing hydrostatic pressure. dl-cysteine-II is preserved down to 3 K, but undergoes phase transitions on compression at about 1.55 GPa, and 6.20 GPa. The changes in the hydrogen bond network preceding the phase transition in dl-cysteine-II in the range 0.25-0.85 GPa differ from those observed on cooling the same structure, but resemble those preceding pressure-induced phase transitions in β- and γ-glycine.

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