Date Published: May 01, 2012
Publisher: International Union of Crystallography
Author(s): Zhen Wei, Jinlong Guo, Xujun Zheng, Shunwei Chen, Qun Wan.
In the title compound, C38H42N4O4·C2H6O, prepared via a spirolactam ring-formation reaction in a rhodamine dye, the xanthene ring system is approximately planar (r.m.s. deviation = 0.0014Å) and subtends dihedral angles of 88.10 (3) and 86.92 (4)° with the spirolactam (r.m.s. deviations = 0.0012 Å) and benzene rings, respectively. The crystal structure consists of chains parallel to [-101], formed via O—H⋯O interactions.
For related structures and background to rhodamine-based dyes, see: Xu et al.(2010a ▶,b ▶); Zhang et al. (2008 ▶); Tian & Peng (2008 ▶); Kwon et al. (2005 ▶); Wu et al.(2007 ▶).