Nitrogen Oxide

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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 (NO
    2    ), nitrogen(IV) oxide
  • Nitrogen trioxide (NO
    3    ), or nitrate radical
  • Nitrous oxide (N
    2    O    ), nitrogen(0,II) oxide
  • Dinitrogen dioxide (N
    2    O
    2    ), nitrogen(II) oxide dimer
  • Dinitrogen trioxide (N
    2    O
    3    ), nitrogen(II,IV) oxide
  • Dinitrogen tetroxide (N
    2    O
    4    ), nitrogen(IV) oxide dimer
  • Dinitrogen pentoxide (N
    2    O
    5    ), nitrogen(V) oxide, or nitronium nitrate [NO
    2    ]+
    [NO
    3    ]−
  • Nitrosylazide (N
    4    O    ), nitrogen(−I,0,I,II) oxide
  • Oxatetrazole (N
    4    O    )
  • Trinitramide (N(NO
    2    )
    3     or N
    4    O
    6    ), nitrogen(0,IV) oxide

Anions

  • Nitroxide (O=N−
    )
  • Nitrite (O=N–O−
     or NO−
    2    )
  • Nitrate (NO−
    3    )
  • Peroxynitrite (O=N–O–O−
     or NO−
    3    )
  • Peroxynitrate (O
    2    N–O–O−
     or NO−
    4    )
  • Orthonitrate (NO3−
    4    , analogous to phosphate PO3−
    4    )
  • Hyponitrite (−
    O–N=N–O−
     or N
    2    O2−
    2    )
  • Trioxodinitrate or hyponitrate ([O
    2    NNO]2−     or [N
    2    O
    3    ]2−    )
  • Nitroxylate ((−
    O–)
    2    N–N(–O−
    )
    2     or N
    2    O4−
    4    )
  • Dinitramide (O
    2    N–N−
    –NO
    2     or N
    3    O−
    4    )

Cations

  • Nitrosonium (N≡O+
     or [NO]+
    )
  • Nitronium (O=N+
    =O     or [NO
    2    ]+
    )

Atmospheric sciences

In atmospheric chemistry:

  • NO {x} (or NOx) refers to the sum of NO and NO
    2    .[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    , HNO
    3    , HNO
    2    , etc.)
  • NO
    z     (or NOz) = NO
    y     − NO
    x
  • Nitric oxide, NO
  • Nitrogen dioxide, NO
    2
  • Nitrous oxide, N
    2    O
  • Dinitrogen trioxide, N
    2    O
    3
  • Dinitrogen tetroxide, N
    2    O
    4
  • Dinitrogen pentoxide, N
    2    O
    5
  • Trinitramide, N
    4    O
    6

Stability

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

See also

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

References

  1. ↑ United States Clean Air Act, 42 U.S.C. § 7602
  2. ↑ Seinfeld, John H.; Pandis, Spyros N. (1997), Atmospheric Chemistry and Physics: From Air Pollution to Climate Change, Wiley-Interscience, ISBN 0-471-17816-0, https://archive.org/details/atmosphericchemi0000sein 



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