title: 2',3,4,4',5-Penta-meth-oxy-chalcone.
abstract: In the title chalcone [systemetic name 1-(2,4-dimeth-oxy-phen-yl)-3-(3,4,5-trimeth-oxy-phen-yl)prop-2-en-1-one], C(20)H(22)O(6), the dihedral angle between the plane of the two benzene rings is 7.03 (4)° with all but one of the meth-oxy groups essentially co-planar with these rings [C-C-O-C torsion angles = -76.1 (2), -0.7 (3), 1.8 (3), -6.2 (3), 2.0 (3)°]. An intra-molecular C-H⋯O inter-action occurs. The crystal packing is stabilized by weak inter-molecular C-H⋯O hydrogen bonds.
authors: Department of Chemistry, University of the Free State, PO Box 339, Bloemfontein, 9300, South Africa.
authors: Johannes H
authors: JH
authors: van Tonder
authors: Theunis J
authors: TJ
authors: Muller
authors: Barend C B
authors: BC
authors: Bezuidenhoudt
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