Nitryl bromide halides

The stability of the nitryl halides follows the stabihty of the nitrosyl halides, F > Cl > Br > I. Nitryl bromide BrN02 exists in equilibrium with NO2/N2O4 at room temperature and can be studied spectroscopically. INO2 has a hfetime of only a few seconds at room temperature. 

Nitrogen.—An indirect method of determining the electrophilic reactivity of nitrosyl chloride towards various substrates in aqueous solution has been proposed. The action of nitrosyl chloride, bromide, and thiocyanate or nitrosating agents in micellar systems has been studied, and the results were interpreted in terms of the competition of anions present in solution for sites at the surface of a cationic micelle. The kinetics of the oxidation of nitrite to nitrate by chlorine and bromine are complex and have been interpreted in terms of mechanisms involving the nitryl halides as intermediates ... 

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