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