Three differently coloured polymorphs of 3,6-bis­(4-chloro­phenyl)-2,5-di­propyl-2,5-di­hydro­pyrrolo­[3,4-c]pyrrole-1,4-dione

So, H.-S.; Matsumoto, S.

doi:10.1107/S2052520619004773

Acta Crystallographica Section B
Acta Crystallographica
Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS

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Figure 9
Semi-empirical diagram of energy versus temperature of PR3R, PR3O and PR3Y. G is the Gibbs free energy and H is the enthalpy. R, O and Y represent PR3R, PR3O and PR3Y, respectively. In addition, t.p. is the transition point between the two polymorphs and m.p. is the melting point.

STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS

ISSN: 2052-5206

Volume 75| Part 3| June 2019| Pages 414-422

https://doi.org/10.1107/S2052520619004773

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