Reinvestigation of the synthesis of tris[benzoyl(thiobenzoyl)methanato-S]arsenic(III): synthesis and X-ray structure of 3,3′-thiodi(1,3-diphenylprop-2-en-1-one)

Abstract

Tris[benzoyl(thiobenzoyl)methanato-S]arsenic(III), prepared by the reaction of arsenic trichloride with benzoyl(thiobenzoyl)methane, appears to be essentially tetrahedral, involving only sulphur-bonded ligands. Under reflux, the Z,Z isomer or 3,3′-thiodi(1,3-diphenylprop-2-en-1-one) is obtained exclusively as confirmed by a single-crystal X-ray analysis.