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Figure 2 Packing diagram [Mercury, Macrae et al.,(2008)] of the unit cell. Non-hydrogen atoms, ring centroids (Cg) and H atoms involved in C--H...\p bonding shown as balls: two close contacts indicated by dotted lines identify the bonds (see text). Symmetry (i) 1 - x, 1 - y, 1 - z (ii) x, 1.5 - y, 1/2 + z (iii) 1 - x, y - 1/2, 1/2 - z. |