Lessons on the Discovery and Assignment of Polymorphs, Highlighted by the Case of the Latent Pigment DPP-Boc

DOI: 10.1021/cg800466x

Authors: M. Tremayne (University of Birmingham) , B. M. Kariuki (University of Cardiff) , J. A. Cameron (University of Birmingham) , M. A. Roberts (STFC Daresbury Laboratory) , K. D. M. Harris (University of Cardiff) , E. J. Maclean (CCLRC Daresbury Laboratory)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Crystal Growth & Design , VOL 9 (2) , PAGES 853-857

State: Published (Approved)
Published: January 2009

Abstract: The latent pigment 1,4-diketo-2,5-di-t-butoxycarbonyl-3,6-diphenylpyrrolo[3,4-c]pyrrole (DPP-Boc) has three well-characterized polymorphic forms (denoted ?, ?, and ?) in the solid state, although some confusion exists in the literature concerning the assignment of these polymorphs. This paper clarifies the assignment of the three polymorphs of DPP-Boc, discusses various issues concerning the polymorphism of this material, and highlights several general issues regarding the characterization, discovery, and assignment of polymorphic systems.

Subject Areas: Chemistry


Instruments: NONE-No attached Diamond beamline