Acta Cryst. (2013). E69, o1626-o1627
[ doi:10.1107/S1600536813027281 ]
Abstract: The asymmetric unit of the title compound, C44H44N2O6, contains two independent molecules with similar conformations. The dihydronaphthalene ring systems are approximately planar [maximum deviations = 0.036 (2), 0.128 (2), 0.0.24 (2) and 0.075 (2) Å]. The dihedral angle between two dihydronaphthalene ring systems is 83.37 (4)° in one molecule and 88.99 (4)° in the other. The carbonyl O atom is linked with the adjacent hydroxy and imino groups via intramolecular O-HO and N-HO hydrogen bonds. In the crystal, molecules are linked through O-HO hydrogen bonds into layers parallel to (001), and adjacent layers are further stacked by - interactions between dihydronaphthalene and phenyl rings into a three-dimensional supramolecular architecture. In the crystal, one of the isopropyl groups is disordered over two positions with an occupancy ratio of 0.684 (8):0.316 (8).
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