Nitrogen oxide

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

Charge-neutral

• Nitric oxide (NO), nitrogen(II) oxide, or nitrogen monoxide
• Nitrogen dioxide (NO₂), nitrogen(IV) oxide
• Nitrogen trioxide (NO₃), or nitrate radical
• Nitrous oxide (N₂O), nitrogen(0,II) oxide
• Dinitrogen dioxide (N₂O₂), nitrogen(II) oxide dimer
• Dinitrogen trioxide (N₂O₃), nitrogen(II,IV) oxide
• Dinitrogen tetroxide (N₂O₄), nitrogen(IV) oxide dimer
• Dinitrogen pentoxide (N₂O₅), nitrogen(V) oxide, or nitronium nitrate [NO₂]⁺[NO₃]⁻
• Nitrosyl azide (N₄O), nitrogen(−I,0,I,II) oxide
• Nitryl azide (N₄O₂)
• Oxatetrazole (N₄O)
• Trinitramide (N(NO₂)₃ or N₄O₆), nitrogen(0,IV) oxide

Anions

Cations

• Nitrosonium (N≡O⁺ or [NO]⁺)
• Nitronium (O=N⁺=O or [NO₂]⁺)

Atmospheric sciences

In atmospheric chemistry:

• NO_x (or NOx) refers to the sum of NO and NO₂.^[1][2]
• NO_y (or NOy) refers to the sum of NO_x and all oxidized atmospheric odd-nitrogen species (e.g. the sum of NO_x, HNO₃, HNO₂, etc.)
• NO_z (or NOz) = NO_y − NO_x

• Mixed Oxides of Nitrogen ("MON"): solutions of nitric oxide in dinitrogen tetroxide/nitrogen dioxide.

• 
  Nitric oxide, NO
• 
  Nitrogen dioxide, NO₂
• 
  Nitrous oxide, N₂O
• 
  Dinitrogen trioxide, N₂O₃
• 
  Dinitrogen tetroxide, N₂O₄
• 
  Dinitrogen pentoxide, N₂O₅
• 
  Trinitramide, N₄O₆

Stability

Due to relatively weak N–O bonding, all nitrogen oxides are unstable with respect to N₂ and O₂, which is the principle behind the catalytic converter, and prevents the oxygen and nitrogen in the atmosphere from combusting.

See also

• Nitrate
• Nitrogen oxide sensor
• Sulfur nitrides, which are valence isoelectronic with nitrogen oxides

References

Index of chemical compounds with the same name

This set index article lists chemical compounds articles associated with the same name.
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