2,5-Bis(4-chlorobenzylidene)cyclopentanone

Abstract

The title bis-chalcone compound, C19H14Cl2O, crystallizes with one half-molecule in the asymmetric unit. The molecule has crystallographic mirror symmetry with the C=O bond on the mirror plane. The molecule adopts anEconfiguration about the central olefinic bonds. In the crystal, molecules are linkedviaweak C—H...O hydrogen bonds, forming supramolecular chains propagating along the [100] direction.

(2E,2′E)-1,1′-(1,4-Phenylene)bis[3-(3-chlorophenyl)prop-2-en-1-one]

“…The s-trans conformation of the central C-C bond of the enone group is confirmed by the C10-C9-C8 C7 torsion angle of data reports À162.88 (17) . This value is less than that reported for the related compound 2,5-bis(4-chlorobenzylidene)cyclopentanone (Samshuddin et al, 2016).…”