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Issue 14, 2020
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Quaternary phase diagrams as a tool for ionic cocrystallization: the case of a solid solution between a racemic and enantiopure ionic cocrystal

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Abstract

In this study, a general isothermal quaternary phase diagram of etiracetam (racemate)–levetiracetam (S-enantiomer)–CaCl2·2H2O–water is generated to understand the crystallization thermodynamics of ionic cocrystal systems. Solubility surface is depicted clearly by the appliance of contour lines and various polyhedrons of the domains in the IQPD are delineated according to the eutectic points. The system shows a full solid solution between the racemic and enantiopure ionic cocrystals.

Graphical abstract: Quaternary phase diagrams as a tool for ionic cocrystallization: the case of a solid solution between a racemic and enantiopure ionic cocrystal

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Article information


Submitted
06 Feb 2020
Accepted
18 Mar 2020
First published
18 Mar 2020

CrystEngComm, 2020,22, 2537-2542
Article type
Paper

Quaternary phase diagrams as a tool for ionic cocrystallization: the case of a solid solution between a racemic and enantiopure ionic cocrystal

L. Song, F. Leng, K. Robeyns and T. Leyssens, CrystEngComm, 2020, 22, 2537
DOI: 10.1039/D0CE00179A

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