CONFORMATION OF METHYLSULFONYL GROUP - A COMPARISON OF THE DATA FOR 2-CHLOROPHENYL METHYL SULFONE IN SOLUTION AND IN CRYSTAL

The conformation of methylsulfonyl group attached to 2-substituted ben zene ring was studied in the crystal and in solution. X-Ray crystal st ructure determination of the title compound demonstrates single confor mation with the dihedral angle of 66.9(2)degrees between the planes de fined by the aromatic ring and by the pivot atom of the ring, sulfur a nd the methyl carbon. In solution, dipole moment measurement leads to the conclusion that the compound also adopts a similar single conforma tion with slightly different dihedral angle of 53(5)degrees.