Quaternary phase diagrams as a tool for ionic cocrystallization: the case of a solid solution between a racemic and enantiopure ionic cocrystal?
CrystEngComm Pub Date: 2020-03-18 DOI: 10.1039/D0CE00179A
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.
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Journal Name：CrystEngComm
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CAS no.: 89640-58-4
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