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Figure 3 A larger portion of the crystal structure of (I), showing the formation of a hydrogen-bonded sheets built from C—H⋯π. For clarity, H atoms not involved in the hydrogen bonding have been omitted. Dashed lines indicate hydrogen bonds. [Symmetry code: (A) − + x, y, − z; (B) + x, y, − z; (C) − x, − + y, z; (D) 2 − x, − + y, − z; (E) 1 − x, − + y, − z]. |