Sulfur dioxide halogen fluorides

Catalysis. Catalytic properties of the activated carbon surface are useful in both inorganic and organic synthesis. For example, the fumigant sulfuryl fluoride is made by reaction of sulfur dioxide with hydrogen fluoride and fluorine over activated carbon (114). Activated carbon also catalyzes the addition of halogens across a carbon—carbon double bond in the production of a variety of organic haUdes (85) and is used in the production of phosgene... 

Nitrations with Nitryl Bromide. Nitryl brcmide conpared with the chloride and fluoride, is quite unstable. Nitration experiments were carried out with solutions obtained by the halogen exchange of nitryl chloride with KBr (not separated from unchanged nitryl chloride and decomposition products) carried out in sulfur dioxide solutions at -20°, and using TiBri as catalyst. Yields of nitrations are lower than those obtained with nitryl chloride, due to the formation of more ring-brominated products (29). This can be attributed partly to free bromine being present from the decomposition of nitryl bromide and to the easier homolysis of nitryl bromide itself. 

Lead(II,IV) oxide Lithium hydride Magnesium Same as for lead dioxide Nitrous oxide, oxygen Air, beryllium fluoride, ethylene oxide, halogens, halocarbons, HI, metal cyanides, metal oxides, metal oxosalts, methanol, oxidants, peroxides, sulfur, tellurium... 

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