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Figure 4
The crystal packing of (V)[link], (VII)[link] and (VIII)[link], viewed parallel to the c axis, with X and Y substituents drawn as spheres. N—H⋯O hydrogen-bonded chains, which propagate parallel to [001], are represented by a single mol­ecule. The layer structure highlighted by dot–dashed lines (left diagram) is the result of the stacking of these chains via a glide operation. Note that OMe/Cl, (VII)[link], and CN/H, (VIII)[link], show the largest differences (dissimilarity index x = 10.1) of all investigated structures.

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 68| Part 10| September 2012| Pages o421-o426
doi:10.1107/S0108270112039297
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