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Figure 2 A part of the crystal structure, showing the formation of a chain of (8) hydrogen-bonded rings and π-π stacking between the benzene rings rings; Cg1: C6/C7/C8/C9/C10/C11, Cg2: C17/C18/C19/C20/C21/C22. Symmetry codes: i) x − 1, y. z + 1; ii) x + 1, y, z − 1. H atoms without H-bonds have been omitted for clarity. |