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Figure 2 A partial packing diagram of (I), showing the formation of R44(21) ring motif. Hydrogen bonds are shown as dashed lines [symmetry codes: (i) x − , 1 − y, z − ; (ii) x − 1, y, z; (iii) x, 1 − y, + z]. H atoms not involved in hydrogen bondings have been omitted for clarity. |