Nitrogen oxide may refer to a binary compound of oxygen and nitrogen, or a mixture of such compounds:

Charge-neutral

Nitric oxide Nitric oxide (nitrogen oxide or nitrogen monoxide) is a colorless gas with the formula . It is one of the principal oxides of nitrogen. Nitric oxide is a free radical: it has an unpaired electron, which is sometimes denoted by a dot in its che ...

(NO), nitrogen(II) oxide, or nitrogen monoxide * Nitrogen dioxide (), nitrogen(IV) oxide *

Nitrogen trioxide Trioxidonitrogen(•) or nitrate radical is an oxide of nitrogen with formula , consisting of three oxygen atoms covalent bond, covalently bound to a nitrogen atom. This highly unstable blue compound has not been isolated in pure form, but can be ...

(), or nitrate radical * Nitrous oxide (), nitrogen(0,II) oxide * Dinitrogen dioxide (), nitrogen(II) oxide dimer * Dinitrogen trioxide (), nitrogen(II,IV) oxide *

Dinitrogen tetroxide Dinitrogen tetroxide, commonly referred to as nitrogen tetroxide (NTO), and occasionally (usually among ex-USSR/Russia rocket engineers) as amyl, is the chemical compound N2O4. It is a useful reagent in chemical synthesis. It forms an equilibrium ...

(), nitrogen(IV) oxide dimer * Dinitrogen pentoxide (), nitrogen(V) oxide, or nitronium nitrate * Nitrosyl azide (), nitrogen(−I,0,I,II) oxide *

Nitryl azide Nitryl azide (tetranitrogen dioxide) is an unstable nitrogen oxide consisting of a covalent nitrogen–nitrogen bond between a nitro group and an azide. It has been detected by infrared spectroscopy as a short-lived product of the reaction between ...

() * Oxatetrazole () * Trinitramide ( or ), nitrogen(0,IV) oxide

Anions

* Nitroxide () *

Nitrite The nitrite polyatomic ion, ion has the chemical formula . Nitrite (mostly sodium nitrite) is widely used throughout chemical and pharmaceutical industries. The nitrite anion is a pervasive intermediate in the nitrogen cycle in nature. The name ...

( or ) *

Nitrate Nitrate is a polyatomic ion A polyatomic ion, also known as a molecular ion, is a covalent bonded set of two or more atoms, or of a metal complex, that can be considered to behave as a single unit and that has a net charge that is not zer ...

() * Peroxynitrite ( or ) * Peroxynitrate ( or ) * Orthonitrate (, analogous to phosphate ) * Hyponitrite ( or ) * Trioxodinitrate or hyponitrate ( or ) * Nitroxylate ( or ) * Dinitramide ( or )

Cations

Nitrosonium The nitrosonium ion is , in which the nitrogen atom is bonded to an oxygen atom with a bond order of 3, and the overall diatomic species bears a positive charge. It can be viewed as nitric oxide with one electron removed. This ion is usually obta ...

( or ) *

Nitronium The nitronium ion, , is a cation. It is an onium ion because its nitrogen atom has +1 charge, similar to ammonium ion . It is created by the removal of an electron from the paramagnetic nitrogen dioxide molecule , or the protonation of nitric aci ...

( or )

Atmospheric sciences

In atmospheric chemistry: * (or NO''x'') refers to the sum of NO and . * (or NO''y'') refers to the sum of and all oxidized atmospheric odd-nitrogen species (e.g. the sum of , , , etc.) * (or NO''z'') = − Image:Nitric-oxide-3D-vdW.png, Image:Nitrogen-dioxide-3D-vdW.png, Image:Nitrous-oxide-3D-vdW.png, Image:Dinitrogen-trioxide-3D-vdW.png, Image:Dinitrogen-tetroxide-3D-vdW.png, Image:Dinitrogen-pentoxide-3D-vdW.png, Image:Trinitramide-3D-spacefill.png,

Stability

Due to relatively weak N–O bonding, all nitrogen oxides are unstable with respect to and , which is the principle behind the catalytic converter and prevents the combustion of the atmosphere.

References