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Figure 6
Schematic representation of types 1 and 2 hydrogen bonding in (II)[link]. Mol­ecules are represented by donor (D) and acceptor (A) centres joined by solid lines and hydrogen bonds by dashed lines. The arrangements shown are (a) a pair of type 1 chains; (b) as (a), but with the introduction of a single type 2 hydrogen bond, D1⋯A2; (c) as (b), but with the introduction of a second, complementary, type 2 hydrogen bond, D2⋯A1.

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ISSN: 2053-2296
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