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Figure 2 The arrangement of the molecules of (I) in the crystal structure viewed approximately along the c axis. The C—H⋯O interactions are represented by dashed lines and π–π interactions by dotted lines. H atoms not involved in C—H⋯O interactions have been omitted. [Symmetry codes: (i) − x, y − , − z; (ii) x − , − y, z − ; (iii) 1 − x, −y, 1 − z; (iv) 1 − x, 1 − y, 1 − z]. |