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Figure 7
Rings, analogous to those shown in Fig. 6[link], but involving C(β)—H/CO and C(α)—H/CO fragments acting as donor/acceptor groups: (a) α-hydroxy­amide⋯C(β)—H/CO, R22(10) pattern (HN22); (b) α-hydroxy­amide⋯C(α)—H/CO R22(9) pattern (HN12); (c) α-hydroxyamide⋯C(α)—H/CO, R22(9) pattern (HOM3). Note the change of conformation, from a to s, accompanying the replacement of a secondary by a tertiary α-hydroxyamide, and connected with it a change of the α-hydroxyl function from acceptor (b) to donor (c).

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 56| Part 5| October 2000| Pages 833-848
doi:10.1107/S0108768100004274
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