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Unusual flash cooling‐induced phase in a crystal of triphenylsilanol

Unusual flash cooling‐induced phase in a crystal of triphenylsilanol The unique phase in a crystal of triphenylsilanol (Ph3SiOH) is reported. It is observed that after the crystal is flash‐cooled from room temperature to 100 K, a new stable ordered phase II occurs with an increase in the unit‐cell parameters compared to the earlier reported phase I. The new phase II occurs upon fast cooling while on slow cooling the disordered phase I is present. Gradual heating from 100 K (phase II) causes the crystal to return to the original phase I at about 150 K. The crystal undergoes the observed transformation in a reversible manner in many consecutive flash cooling/heating cycles without cracking. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Crystallographica Section B Wiley

Unusual flash cooling‐induced phase in a crystal of triphenylsilanol

Acta Crystallographica Section B , Volume 79 (3) – Jun 1, 2023

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Publisher
Wiley
Copyright
Copyright © 2023 Wiley Subscription Services, Inc., A Wiley Company
ISSN
2052-5192
eISSN
2052-5206
DOI
10.1107/s2052520623004006
Publisher site
See Article on Publisher Site

Abstract

The unique phase in a crystal of triphenylsilanol (Ph3SiOH) is reported. It is observed that after the crystal is flash‐cooled from room temperature to 100 K, a new stable ordered phase II occurs with an increase in the unit‐cell parameters compared to the earlier reported phase I. The new phase II occurs upon fast cooling while on slow cooling the disordered phase I is present. Gradual heating from 100 K (phase II) causes the crystal to return to the original phase I at about 150 K. The crystal undergoes the observed transformation in a reversible manner in many consecutive flash cooling/heating cycles without cracking.

Journal

Acta Crystallographica Section BWiley

Published: Jun 1, 2023

Keywords: triphenylsilanol; flash cooling; crystal structure

There are no references for this article.