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Figure 2
Packing diagram of (I[link]) showing the helical structure formed via N—H⋯O hydrogen bonds, which are indicated by dashed lines. C—H⋯O interactions which connect the helical chains are indicated by dotted lines [symmetry codes: (i)–(iv) are as in Table 2[link]; (v) 1 − x, y − ½, [3 \over 2] − z; (vi) 1 + x, y, z; (vii) 2 − x, y − ½, [3 \over 2] − z].

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 57| Part 12| December 2001| Pages 1450-1453
doi:10.1107/S0108270101016389
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