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Two isomorphous benzenesulfonamide crystal structures determined by intermolecular C-H...O, C-H...pi and C-H...Cl
J W Bats1, T M Frost, A S Hashmi
1Institut für Organische Chemie, Universität Frankfurt, Marie-Curie-Strasse 11, D-60439 Frankfurt am Main, Germany. bats@chemie.uni-frankfurt.de
Abstract:
The title compounds, N-[5-(4-chlorophenyl)furan-2-ylmethyl]-4-methyl-N-(prop-2-ynyl)benzenesulfonamide, (Ia), and N-[5-(2-chlorophenyl)furan-2-ylmethyl]-4-methyl-N-(prop-2-ynyl)benzenesulfonamide, (Ib), both C(21)H(18)ClNO(3)S, have isomorphous crystal structures. The crystal packing is mainly determined by intermolecular C-H...O and C-H...pi interactions. These interactions are very similar in (Ia) and (Ib). Additional intermolecular C-H...Cl interactions appear less important and are different in (Ia) and (Ib). The different positions of the Cl atoms result in small variations of the crystal packing of the two compounds.