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Figure 3
(a) Packing diagram of (II)[link]. (b) View of the inter­molecular C—H⋯O hydrogen bonds forming a sequence of R22(12) and R44(28) rings in (III)[link]. (c) Packing diagram of (IV)[link]; note the absence of any inter­molecular hydrogen-bond inter­actions. (d) View of the inter- and intra­molecular N—H⋯O hydrogen bonds forming an R22(4) ring and an S(6) ring in (V)[link]. (e) View of the inter­molecular N—H⋯O hydrogen bonds forming an R22(10) ring and a chain of C—H⋯O hydrogen bonds in (VI)[link]. (f) Packing diagram of (VII)[link]; note the absence of any inter­molecular hydrogen-bond inter­actions. H atoms not involved in hydrogen-bond inter­actions have been omitted for clarity. The N—H⋯O and C—H⋯O hydrogen-bond inter­actions are shown as dashed red lines, while inter­actions involving aromatic rings (π–π, O⋯π and H⋯π) are shown as dashed blue lines.

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 71| Part 2| January 2015| Pages 103-109
doi:10.1107/S2053229614027247
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