Acta Cryst. (2013). E69, o223 [ doi:10.1107/S1600536813000354 ]
Abstract: In the title compound, C20H24N2O5, the dihedral angle between the two roughly planar salicylamide fragments [r.m.s. deviations = 0.043 (2) and 0.149 (2) Å] is 25.50 (5)°. The molecular conformation is stabilized by intramolecular O-HO hydrogen bonds involving phenol -OH groups and amide O atoms. Intermolecular hydroxymethyl-amide O-HO and amine-hydroxymethyl N-HO hydrogen bonds form infinite chains along the b axis. These chains are further interlinked by amine-amide N-HO and phenol-phenol O-HO interactions, thus giving layers parallel to (001).
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