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Figure 2 Part of the crystal structure of I, showing the formation of a (0 1 0) sheet. For the sake of clarity, H atoms not involved in the motif shown have been omitted. Intermolecular interactions are represented by dashed lines. Symmetry codes: (i) x + 1, y, z; (ii) −x + 1, y, z + 1; (iii) x − 1, y, z; (iv) x + 1, y, z − 1. |