Date Published: May 01, 2011
Publisher: International Union of Crystallography
Author(s): Jing-Bo Qiu, Bing-Zhu Yin.
The title compound, C22H30N4O2, has a crystallographic inversion center located at the mid-point of the N—N single bond. Apart from the four ethyl C atoms, the non-H atoms are nearly coplanar with a mean deviation of 0.0596 (2) Å. An intramolecular O—H⋯N hydrogen bond occurs. In the crystal, weak intermolecular C—H⋯O hydrogen bonds link the molecules into layers parallel to (100).
For the synthesis, see Tang et al. (2009 ▶). For a related structure, see Gil et al. (2010 ▶). For applications of photochromic aromatic Schiff base molecules as molecular memories and switches, see Sliwa et al. (2005 ▶).