title: 1-[2,2-Bis(phenyl-sulfon-yl)ethen-yl]-4-meth-oxy-benzene.
abstract: In the title compound, C(21)H(18)O(5)S(2), the two sulfur-bound phenyl rings lie on opposite sides of the meth-oxy-phenyl group, making dihedral angles of 77.58 (8) and 87.45 (8)°with it. The dihedral angle between the sulfur-bound phenyl rings is 57.31 (8)°. In the crystal, π-π stacking is observed between the two sulfur-bound phenyl rings, with a centroid-centroid distance of 3.878 (1) Å and a dihedral angle of 7.58 (8)°. The mol-ecules are linked by weak C-H⋯O and C-H⋯π contacts.
authors.affiliation: Ludwig-Maximilians-Universität, Department of Chemistry, Butenandtstrasse 5-13, 81377 München,  Germany.
authors.forename: Haruyasu
authors.initials: H
authors.lastname: Asahara
authors.forename: Peter
authors.initials: P
authors.lastname: Mayer
authors.forename: Herbert
authors.initials: H
authors.lastname: Mayr