Date Published: July 01, 2011
Publisher: International Union of Crystallography
Author(s): Na-Na Du, Hua-Jie Xu, Chong-Fu Song, Liang-Quan Sheng.
The title compound, C19H21N3O4, crystallizes with two independent molecules in the asymmetric unit. In both molecules, there is an intramolecular O—H⋯N hydrogen bond, which correlates with the fact that each molecule adopts an E configuration with respect to the C=N bond. In the crystal, there are C—H⋯O and C—H⋯π interactions present.
For background to the naphthalene group as a fluorophore, see: Li et al. (2010 ▶); Iijima et al. (2010 ▶). For related structures, see: Xu et al. (2009 ▶); Liu et al. (2011 ▶). For bond-length data, see: Allen et al. (1987 ▶). For hydrogen-bond motifs, see: Bernstein et al. (1995 ▶).