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Figure 4
The type-II hydrogen-bonding pattern of (II) , generating a 21 helical pattern. H atoms not involved in hydrogen bonding have been omitted for clarity. [Symmetry codes: (i) x − , −y + , −z + 1; (ii) x + , −y + , −z + 1.] |
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Figure 4
The type-II hydrogen-bonding pattern of (II) , generating a 21 helical pattern. H atoms not involved in hydrogen bonding have been omitted for clarity. [Symmetry codes: (i) x − , −y + , −z + 1; (ii) x + , −y + , −z + 1.] |