Nitryl
Nitryl is the nitrogen dioxide moiety when it occurs in a larger compound as a univalent fragment. Examples include nitryl fluoride and nitryl chloride.
Like nitrogen dioxide, the nitryl moiety contains a nitrogen atom with two bonds to the two oxygen atoms, and a third bond shared equally between the nitrogen and the two oxygen atoms. The nitrogen-centred radical is then free to form a bond with another univalent fragment to produce an N-X bond, where X can be F, Cl, OH, etc.
In organic nomenclature, the nitryl moiety is known as the nitro group. For instance, nitryl benzene is normally called nitrobenzene.
