Bromine monoxide

A more concentrated solution of HOBr can be prepared by filtration of one of the above solutions and distillation in vacuum. Or the mercuric oxide reaction can be carried out in Freon 11 without water, yielding a solution of bromine monoxide which is filtered and hydrolyzed. Hypobromous acid is slightly ionized its dissociation constant at 25°C is 2 x 10 . ... 

The oxides of bromine and iodine are not numerous, and they are not particularly important. Bromine monoxide, Br20 is obtained by the reaction... 

Hegels, E., P. J. Crutzen, T. Kliipfel, D. Perner, and J. P. Burrows, Global Distribution of Atmospheric Bromine-Monoxide from GOME on Earth Observing Satellite ERS-2, Geophys. Res. Lett, 25, 3127-3130 (1998). 

Bromine Oxides The following compds are described in the literature Bromine monoxide, BrzO, mw 175.83 dk-brn crysts, mp -17 to -18°... 

McElroy CT, McLinden CA, McConnell JC (1999) Evidence for Bromine Monoxide in the Free Troposphere during the Arctic Polar Sunrise. Nature 387 338... 

Bobrowski N, Honninger G, Galle B, Platt U (2003) Detection of Bromine Monoxide in a Volcanic Plume. Nature 423 273... 

Regeneration of atomic chlorine, essential for catalysis, does not take place by means of reaction 8 because of the very low concentration of atomic oxygen (reaction 1 does not happen in the dark ). However, reaction 14 with bromine monoxide does occur instead. Furthermore, dimerization (equation 18) of chlorine monoxide18 is followed by photolysis (equation 19) and dissociation (equation 20) of the chloroperoxy radicals which serve to release chlorine atoms19. Thus arises the now famous Antarctic ozone hole, a very significant depletion in ozone concentrations at altitudes of 15-20 km during the austral... 

The combination reagent is significantly more reactive than elemental bromine or NBS, and should thus be useful where reactions with these (wo reagents are sluggish. The reaction appears to involve bromine monoxide as (he reactive brominating agent. The new reaction is applicable to substitution of primary and secondary C-H bonds yields for the most part are satisfactory. 

Bobrowski N., Honninger G., Galle B., and Platt U. (2003) Detection of bromine monoxide in a volcanic plume. Nature 423, 273 -276. 

McElroy C. T., McLinden C. A., and McConnell J. C. (1999) Evidence for bromine monoxide in the free troposphere during the Arctic polar sunrise. Nature 397, 338-341. 

Other nitrogen-containing reservoirs CIONO2 and Br0N02 are formed by reactions with chlorine and bromine monoxide, respectively... 

The reactions between chlorine and bromine monoxide also play an important role in the lower stratosphere, particularly at high latitudes in winter. Three channels must be considered... 

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