Abstract
In the title compound, C16H10Cl2O3, the olefinic double bond adopts an E conformation [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 the c-axis direction.
Highlights
In the title compound, C16H10Cl2O3, the olefinic double bond adopts an E conformation [C—C C—C torsion angle = À172.9 (3)]
Molecules are linked by weak C—HÁ Á ÁO and C—HÁ Á ÁCl hydrogen bonds, forming chains propagating along the c-axis direction
As part of our ongoing work on such molecules (Kumara et al, 2017), we report the synthesis and crystal structure of the title compound here
Summary
Chalcones constitute the central cores for the construction of a wide range of bioactive compounds (Naveen et al, 2016). As part of our ongoing work on such molecules (Kumara et al, 2017), we report the synthesis and crystal structure of the title compound here. The molecule is nearly planar, with a dihedral angle of 5.57 (9) between the benzodioxole and dichloro benzene rings that are bridged by the olefinic double bond. This value is comparable with the value of 6.99 (6) reported earlier between the aromatic rings in the related chalcone derivative (E)-1-(1,3benzodioxol-5-yl)-3-(2,4,5-trimethoxy-phenyl)prop-2-en-1-one. The carbonyl group at C7 lies almost in the plane of the olefinic double bond and benzodioxole ring as indicated by the C3—C4—C7—O3 and O3—C7—C8—C9 torsion angles 6.2 (3) and 7.6 (4) respectively
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