Issue 30, 2019

Antisolvent addition at extreme conditions

Abstract

This article describes the use of antisolvent addition at high-pressure to aid precipitation and recovery of high-pressure phases to ambient pressure. Paracetamol (PCM) was used as a model system to demonstrate the principle due to the extensive literature of paracetamol at high-pressure and ambient pressure. We have observed that we are able to recover the orthorhombic form of paracetamol to ambient pressure using this technique, although solvent-mediated transformations are a hurdle. During this investigation we observed a new methanol solvate of paracetamol that is similar in structure to the known form. The methanol solvate is stable to 0.2 GPa before transformation to the orthorhombic form that is known to be the stable form at high pressure.

Graphical abstract: Antisolvent addition at extreme conditions

Supplementary files

Article information

Article type
Paper
Submitted
12 mar. 2019
Accepted
29 abr. 2019
First published
29 abr. 2019

CrystEngComm, 2019,21, 4437-4443

Antisolvent addition at extreme conditions

M. R. Ward and I. D. H. Oswald, CrystEngComm, 2019, 21, 4437 DOI: 10.1039/C9CE00365G

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