Back to Search
Start Over
High-pressure Nucleation of Low-Density Polymorphs*.
- Source :
-
Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2021 Apr 26; Vol. 27 (24), pp. 7069-7073. Date of Electronic Publication: 2021 Mar 04. - Publication Year :
- 2021
-
Abstract
- New polymorphs β and γ of bis-3-nitrophenyl disulphide, crystallized above 0.3 GPa, are less dense than the ambient-pressure polymorph α. This counterintuitive density relation results from the high-entropy nucleation and subsequent kinetic crystallization. The work performed by pressure compensates the high entropy and temperature product, substantiated in varied conformers and increased chemical potential. Pressure-increased viscosity promotes the kinetic polymorphs, in accordance with empirical Ostwald's rule of stages. It contrasts to mechanochemical techniques, favouring high-density polymorphs.<br /> (© 2021 The Authors. Published by Wiley-VCH GmbH.)
Details
- Language :
- English
- ISSN :
- 1521-3765
- Volume :
- 27
- Issue :
- 24
- Database :
- MEDLINE
- Journal :
- Chemistry (Weinheim an der Bergstrasse, Germany)
- Publication Type :
- Academic Journal
- Accession number :
- 33506549
- Full Text :
- https://doi.org/10.1002/chem.202005121