Journal
CRYSTAL GROWTH & DESIGN
Volume 21, Issue 3, Pages 1434-1442Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.cgd.0c00991
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Funding
- COST action [CA18112]
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This study reveals the mechanistic pathway of cocrystal formation through a metastable liquid intermediate phase by reacting diphenylamine with benzophenone in the solid state.
Diphenylamine reacts with benzophenone in the solid state through the formation of a eutectic liquid intermediate, from which the final product, in the form of a hydrogen-bonded cocrystal, is finally formed. By a simple experiment, the phase diagram of the benzophenone/diphenylamine system is effectively divided into two parts, which enabled monitoring of the overall process from the side of each reactant separately. Accompanied by isothermal and nonisothermal spectroscopic monitoring of the system, this provides additional details of the mechanistic pathway of the process of cocrystal formation through a metastable liquid intermediate phase.
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