Acta Cryst. (2014). C70, 332-337 [ doi:10.1107/S2053229614003568 ]
Synopsis: In three 5-acetyl-11-ethyl-6,11-dihydro-5H-dibenzo[b,e]azepine-6-carboxylic acids, which differ only in the presence of zero, one or two methyl substituents in one of the aryl rings, the hydrogen-bonded supramolecular aggregation is, respectively, two-, one- and three-dimensional.
Formula: C19H19NO3, C20H21NO3 and C21H23NO3
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