Date Published: June 01, 2011
Publisher: International Union of Crystallography
Author(s): Hoong-Kun Fun, Patcharaporn Jansrisewangwong, Chatchanok Karalai, Suchada Chantrapromma.
The asymmetric unit of the title compound, C20H24N2O6, contains one half-molecule, the complete molecule being generated by a crystallographic inversion centre. The molecule is nearly planar with a dihedral angle between the two benzene rings of 0.03 (4)° and the central C/N/N/C plane making a dihedral angle of 8.59 (7)° with each of its two adjacent benzene rings. The two methoxy groups at the ortho and meta positions are slightly twisted [C—O—C—C torsion angles = 7.23 (12) and 5.73 (13)°], whereas the methoxy group at the para position is almost coplanar with the attached benzene ring [C—O—C—C torsion angle = −2.02 (13)°]. The crystal structure is stabilized by a weak C—H⋯π interaction.
For bond-length data, see: Allen et al. (1987 ▶). For related structures, see: Fun et al. (2010 ▶); Jansrisewangwong et al. (2010 ▶); Zhao et al. (2006 ▶). For background to and the biological activity of hydrazones, see: Avaji et al. (2009 ▶); El-Tabl et al. (2008) ▶; Kitaev et al. (1970 ▶); Qin et al. (2009 ▶); Ramamohan et al. (1995 ▶); Rollas & Küçükgüzel (2007 ▶). For the stability of the temperature controller used in the data collection, see: Cosier & Glazer (1986 ▶).