| Инд. авторы: | Zakharov B.A., Losev E.A., Kolesov B.A., Drebushchak V.A., Boldyreva E.V. |
| Заглавие: | Low-temperature phase transition in glycine-glutaric acid co-crystals studied by single-crystal X-ray diffraction, Raman spectroscopy and differential scanning calorimetry |
| Библ. ссылка: | Zakharov B.A., Losev E.A., Kolesov B.A., Drebushchak V.A., Boldyreva E.V. Low-temperature phase transition in glycine-glutaric acid co-crystals studied by single-crystal X-ray diffraction, Raman spectroscopy and differential scanning calorimetry // Acta Crystallographica. Section B: Structural Science. - 2012. - Vol.68. - Iss. 3. - P.287-296. - ISSN 0108-7681. - EISSN 1600-5740. |
| Внешние системы: | DOI: 10.1107/S0108768112015972; PubMed: 22610679; SCOPUS: 2-s2.0-84861412624; |
| Реферат: | eng: The occurrence of a first-order reversible phase transition in glycine-glutaric acid co-crystals at 220-230 K has been confirmed by three different techniques - single-crystal X-ray diffraction, polarized Raman spectroscopy and differential scanning calorimetry. The most interesting feature of this phase transition is that every second glutaric acid molecule changes its conformation, and this fact results in the space-group symmetry change from P21/c to . The topology of the hydrogen-bonded motifs remains almost the same and hydrogen bonds do not switch to other atoms, although the hydrogen bond lengths do change and some of the bonds become inequivalent. © 2012 International Union of Crystallography Printed in Singapore - all rights reserved.
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| Ключевые слова: | conformational polymorphism; hydrogen bonds; phase transition; single-crystal to single-crystal transformation; Co-crystals; Conformational polymorphisms; First-order; Glutaric acid; Low-temperature phase transition; Polarized raman spectroscopy; Reversible phase transition; Single crystal x-ray diffraction; single-crystal to single-crystal transformation; Space-group symmetry; Three different techniques; Amino acids; Conformations; Spectrum Analysis, Raman; Phase Transition; Models, Molecular; Hydrogen Bonding; Glycine; Glutarates; Crystallography, X-Ray; Crystallization; Cold Temperature; Calorimetry, Differential Scanning; X ray crystallography; Raman spectrometry; phase transition; hydrogen bond; differential scanning calorimetry; crystallization; cold; chemistry; chemical structure; article; glycine; glutaric acid derivative; glutaric acid; Hydrogen bonds; X ray diffraction; Raman spectroscopy; Raman scattering; Phase transitions; amino acid co-crystals; Differential scanning calorimetry; |
| Издано: | 2012 |
| Физ. характеристика: | с.287-296 |