Interhalogens

INTER HALOGEN COMPOUNDS AND POLYHALIDES There are four types of interhalogen compound ... 

Molybdenum trioxide Chlorine trifluoride, interhalogens, metals... 

Sihcon and boron bum ia fluorine forming siUcon tetrafluoride [7783-61-17, SiF, and boron trifluoride [7637-07-2] respectively. Selenium and tellurium form hexafluorides, whereas phosphoms forms tri- or pentafluorides. Fluorine reacts with the other halogens to form eight interhalogen compounds (see Fluorine compounds, inorganic-halogens). 

J. E. Gall and co-workers, "Interhalogen Compounds of Fluorine," papers presented m Annual ACS Meeting, New York, Sept. 1947. 

J. E. Ellis and G. Iveson, The Application of Gas-Eiquid Chromatography to the Analysis of Volatile Halogen and Interhalogen Compounds, Gas Chromatography, Butterworths, London, 1956 pp. 300—309. 

Safety. Magnesium oxide (fume) has a permissible exposure limit (PEL) (134) (8 hours, TWA), of 10 mg/m total dust and 5 mg/m respirable fraction. Tumorigenic data (intravenous in hamsters) show a TD q of 480 mg/kg after 30 weeks of intermittent dosing (135), and toxicity effects data show a TC q of 400 mg/m for inhalation in humans (136). Magnesium oxide is compatible with most chemicals exceptions are strong acids, bromine pentafluoride, chlorine trifluoride, interhalogens, strong oxidizers, and phosphorous pentachloride. 

Miscellaneous inorganics Halogens and interhalogens Miscellaneous organics Organic halogen compounds... 

The interhalogen compounds are the bromine- and iodine-base materials. It is the larger, more positive halogen that is the reactive portion of the interhalogen molecule during the disinfection process. Although only used on a limited basis at present, there are members of this class that show great promise as environmentally safe disinfectants. 

Two approaches that have been investigated recently for disinfection are mixtures of bromine and chlorine, and mixtures containing bromide or iodide salts. Some evidence exists that mixtures of bromine and chlorine have superior germicidal properties than either halogen alone. It is believed that the increased bacterial activity of these mixtures can be attributed to the attacks by bromine on sites other than those affected by chlorine. The oxidation of bromide or iodide salts can be used to prepare interhalogen compounds or the hypollalous acid in accordance with the following reaction ... 

Warning Depending on the ratio of hydrogen to halogen in a given molecule, addition of an interhalogen to that substance in the absence of solvent can result in spontaneous ignition or worse. 

Interhalogen compounds such as iodine monochloride have been added to fluoroalkyl-substituted alkenes. The observed unidirectional regiochemistry can be explained by the polarity ot the double bond [14] (equation 7)... 

Interhalogen compounds react withperfluoroalkylhydrides to yield mixtures of halosubstituted products [43] (equations 25 and 26)... 

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