(E)-1-(Benzo[d][1,3]dioxol-5-yl)-3-(2,3-dichlorophenyl)prop-2-en-1-one

Abstract

In the title compound, C16H10Cl2O3, the olefinic double bond adopts anEconformation [C—C=C—C torsion angle = −172.9 (3)°]. The dihedral angle between the benzodioxole and dichlorobenzene rings is 5.57 (9)°. In the crystal, molecules are linked by weak C—H...O and C—H...Cl hydrogen bonds, forming chains propagating along thec-axis direction.

An orthorhombic polymorph of (E)-1-(benzo[d][1,3]dioxol-5-yl)-3-(2,3-dichlorophenyl)prop-2-en-1-one

“…1. It is a polymorph having been reported previously in the monoclinic space-group P2 1 /c (Lokeshwari et al, 2017). The molecule is nearly planar as seen by the dihedral angle of 0.14 (16) between the benzodioxole ring system and the dichlorobenzene ring; these are bridged by an olefinic double bond that adopts an E conformation.…”

“…The title compound, C 16 H 10 Cl 2 O 3 , is almost planar with a dihedral angle of 0.14 (16) between the benzodioxole ring system and the dichlorobenzene ring that are bridged by the olefinic double bond. The corresponding value reported for the monoclinic polymorph is [5.57 (9) (Lokeshwari et al (2017). IUCrData, 2, x170103).…”