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Figure 2 Part of the crystal structure of (I), showing the formation of a (100) sheet. For the sake of clarity, H atoms not involved in the motif shown have been omitted. Intermolecular interactions are represented by dashed lines. Selected atoms are labelled. [Symmetry codes: (i) −x,y − 1/2,-z + ; (ii) x + 1,-y + ,z + 1/2; (iii) −x,y + 1/2,-z + ; (iv) x,-y + ,z + 1/2]. |