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Figure 4 A partial packing diagram of (I), showing the formation of R22(16) and R42(19) ring motifs. Hydrogen bonds are shown as dashed lines [symmetry codes: (i) x + , 1 − y, 1 − z; (ii) −x, 1 − y, 1 − z; (iii) x − 1, y, z]. H atoms not involved in hydrogen bondings have been omitted for clarity. |