A process for preparing a polyfluorinated compound of formula Ar—R.sub.1 (I), wherein Ar—R.sub.1 (I) is an aromatic ring system

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wherein R.sub.1 is selected from the group consisting of SF.sub.4Cl, SF.sub.3, SF.sub.2CF.sub.3, TeF.sub.5, TeF.sub.4CF.sub.3, SeF.sub.3, IF.sub.2, SeF.sub.2CF.sub.3, and IF.sub.4, X.sub.2 is N or CR.sub.2, X.sub.3 is N or CR.sub.3, X.sub.4 is N or CR.sub.4, X.sub.5 is N or CR.sub.5, X.sub.6 is N or CR.sub.6, and the total number of nitrogen atoms in the aromatic ring system is between 0 and 3, wherein R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are independently selected from the group consisting of hydrogen, fluoro, chloro, bromo, nitro, trifluoromethyl, 2,2,2-trifluoroethyl, pentafluorosulfanyl, phthalimido, azido, benzyloxy, trifluoromethoxy, 2,2,2-trifluoroethoxy, methoxycarbonyl, ethoxycarbonyl, methylcarbonyl, ethylcarbonyl, acetoxy, t-butyl, phenylcarbonyl, benzylcarbonyl, 3-trifluoromethylphenyl, phenylsulfonyl, methylsulfonyl, chlorophenyl, methyldoxolonyl, methyl, isopropyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, fluoromethyl, fluoroethyl and phenyl.

A process for preparing a polyfluorinated compound of formula Ar—R.sub.1 (I), wherein Ar—R.sub.1 (I) is an aromatic ring system

##STR00001##

wherein R.sub.1 is selected from the group consisting of SF.sub.4Cl, SF.sub.3, SF.sub.2CF.sub.3, TeF.sub.5, TeF.sub.4CF.sub.3, SeF.sub.3, IF.sub.2, SeF.sub.2CF.sub.3, and IF.sub.4, X.sub.2 is N or CR.sub.2, X.sub.3 is N or CR.sub.3, X.sub.4 is N or CR.sub.4, X.sub.5 is N or CR.sub.5, X.sub.6 is N or CR.sub.6, and the total number of nitrogen atoms in the aromatic ring system is between 0 and 3, wherein R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are independently selected from the group consisting of hydrogen, fluoro, chloro, bromo, nitro, trifluoromethyl, 2,2,2-trifluoroethyl, pentafluorosulfanyl, phthalimido, azido, benzyloxy, trifluoromethoxy, 2,2,2-trifluoroethoxy, methoxycarbonyl, ethoxycarbonyl, methylcarbonyl, ethylcarbonyl, acetoxy, t-butyl, phenylcarbonyl, benzylcarbonyl, 3-trifluoromethylphenyl, phenylsulfonyl, methylsulfonyl, chlorophenyl, methyldoxolonyl, methyl, isopropyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, fluoromethyl, fluoroethyl and phenyl.

The present invention refers to a process for a catalytic aryl transfer to rearrange the backbone of aromatic C—X bonds.

A diselenide protective film, a method of using the diselenide protective film, and a method of making the diselenide protective film are provided. The diselenide protective film includes at least one of three novel diselenide organic polymer structures, and the film provides protection against corrosion of metals such as steel. The method of making the diselenide protective film comprising at least one of three novel diselenide organic polymer structures includes reacting a diselenide-based diamine with one of a diisocyanate, a diisocyanate and phosgene, or a diisocyanate, epichlorohydrin and potassium hydroxide.

A diselenide protective film, a method of using the diselenide protective film, and a method of making the diselenide protective film are provided. The diselenide protective film includes at least one of three novel diselenide organic polymer structures, and the film provides protection against corrosion of metals such as steel. The method of making the diselenide protective film comprising at least one of three novel diselenide organic polymer structures includes reacting a diselenide-based diamine with one of a diisocyanate, a diisocyanate and phosgene, or a diisocyanate, epichlorohydrin and potassium hydroxide.

New diorganyl diselenide compounds are described herein, as well as the use of such diorganyl diselenide compounds in forming anticorrosion coatings for stainless steel. Also described are methods for forming the new diorganyl diselenide compounds as well as anti-corrosion coatings containing the diorganyl diselenide compounds.

New diorganyl diselenide compounds are described herein, as well as the use of such diorganyl diselenide compounds in forming anticorrosion coatings for stainless steel. Also described are methods for forming the new diorganyl diselenide compounds as well as anti-corrosion coatings containing the diorganyl diselenide compounds.

Novel organoselenium selective ligands are presented and designed to determine metal ions in a sample. These ligands are used as complexing agents in a dispersive liquid-liquid microextraction procedure of copper and zinc ions. The procedure has a shortened extraction time, minimal organic solvent types, and lower amounts of solvents, as well as easy operation and high enrichment efficiency.

Novel organoselenium selective ligands are presented and designed to determine metal ions in a sample. These ligands are used as complexing agents in a dispersive liquid-liquid microextraction procedure of copper and zinc ions. The procedure has a shortened extraction time, minimal organic solvent types, and lower amounts of solvents, as well as easy operation and high enrichment efficiency.

New selenated thiourea hybrid compounds are described herein, as well as the use of such selenated thiourea hybrid compounds in inhibiting corrosion of a steel material. Also described are methods for forming the new selenated thiourea hybrid compounds as well as anti-corrosion coatings containing the selenated thiourea hybrid compounds.