Formation and structure of a crystalline adduct of hexachloroacetone with water and dimethyl sulphoxide

Abstract

The 1:1:1 adduct of hexachloroacetone (HCA) with water and dimethyl sulphoxide (DMSO) can be obtained as a crystalline solid, which has been subjected to X-ray crystallographic examination. The structure contains chains of alternating units of HCA hydrate and DMSO containing bifurcated hydrogen bonding at the DMSO oxygen atom, with one bond to an oxygen atom of HCA in the same chain and another to one in an adjacent chain. Thus two chains form a pair along the crystallographic a axis.