Fig. 2. Complexation and decomposition of host-guest complexes involving solid-state molecular motion.
Structures of, and transformations between, the co-crystalline material Cα, mixed crystalline species (e.g., Mα and Mβ), co-crystalline materials (i.e., Iα, Iβ, and Cδ), and the amorphous form (Am) produced by exposure to organic solvents (vapour or liquid forms) or other treatments (e.g., grinding). a, b, d, e, g Suggested structures of Iα, Am, Iβ, Mα, and Mβ base on PXRD analysis, 1H NMR, and fluorescence spectroscopic studies. c, f Single crystal structure of co-crystals Cα and Cδ.