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Acta Cryst. (2014). C70, 332-337  [ doi:10.1107/S2053229614003568 ]

Three closely related dibenzazepine carb­oxy­lic acids: hydrogen-bonded aggregation in one, two and three dimensions

C. M. Sanabría, A. Palma, J. Cobo and C. Glidewell

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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