Trichlates, an Unattended Class of Compounds: Characterization of Cl CSO Cl, and (H O )[Cl CSO ].

Chlorination of CS leads to trichloromethanesulfenyl chloride, Cl CSCl, in moderate yields. The oxidation of Cl CSCl with H O gives Cl CSO Cl, the chloride of trichloromethanesulfonic acid. Cl CSO Cl is the crucial product for the preparation of trichloromethanesulfonates ("trichlates") and has been characterized by IR spectroscopy, differential scanning calorimetry (DSC) and X-ray diffraction measurements (P-1, a=609.

Systematic control of hydrophobic and superhydrophobic properties using double-rough structures based on mixtures of metal oxide nanoparticles.

Double-rough surfaces were prepared by using mixtures of metal oxide nanoparticles with diameters on two different length scales. The degree of double-roughness of these surfaces was controlled using defined ratios of larger (approximately 300 nm) and smaller (approximately 30 nm) particles. If the preparation method was chosen such that the smaller particles decorate the larger ones, a roughness on two length scales was induced and an increase of contact angles from 130 degrees to 160 degrees with increasing double-roughness was observed.