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Figure 2
The hydrogen bonding in (Ia)[link], showing (a) the mol­ecules forming R22(8) inversion-related dimers via pairs of N—H⋯O hydrogen bonds, and (b) six sets of these hydrogen-bonded dimers forming puckered rings, in which the O atom of each N—H⋯O inter­action is also the acceptor in an O—H⋯O hydrogen bond involving the 5-hy­droxy group as donor. The 6-Me groups all point towards the centres of the large rings. The resulting large R126(42) rings straddle the [\overline{3}] axis and stack to form solvent-accessible channels parallel to the c axis.

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 67| Part 8| July 2011| Pages o324-o328
doi:10.1107/S0108270111026254
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