title: 2',3,4,4'-Tetra-meth-oxy-chalcone.
abstract: IN THE TITLE COMPOUND [SYSTEMATIC NAME: 1-(2,4-dimethoxyphenyl)-3-(3,4-dimethoxyphenyl)prop-2-en-1-one], C(19)H(20)O(5), the dihedral angle between the benzene rings is 26.88 (5)°. One of the meth-oxy groups is twisted slightly away from the plane [C-O-C-C torsion angle = -12.8 (3)°] while the others are almost co-planer [C-O-C-C torsion angles = -3.2 (3), 2.6 (3) and -3.6 (3)°]. The crystal packing is stabilized by inter-molecular C-H⋯O inter-actions. A weak intra-molecular C-H⋯O inter-action occurs.
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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