Oxygen compounds



 

See also: Category:Oxygen compounds

In almost all known compounds of rust.

There are known compounds of oxygen with almost all the other elements occurring in nature. The list of known compounds of oxygen includes some of the rarest elements: einsteinium (Es2O3).

One unexpected oxygen compound is dioxygen hexafluoroplatinate O2+PtF6−. It was discovered when ethers in which the oxygen atom is part of a ring of three atoms. O22+ is another cation as in O2F2, it is only formed in the presence of stronger oxidants than oxygen, which limits this cation to oxygen fluorides, e.g. oxygen fluoride.[2]

When dissolved in water, many metallic oxides form phosphoric acid.[3]

Oxides and peroxides

  Although oxygen molecules are not generally reactive at room temperature they do react with certain strong inorganic hematite.

Due to its platinum) resist direct chemical combination with oxygen, and substances like gold(III) oxide must be formed by an indirect route.

potassium (K) reacts with oxygen.

hydrogen and 2 to 4% oxygen through an electric discharge.[3] A more commercially viable method is allow autoxidation of an organic intermediate; 2-ethylanthrahydroquinone dissolved in an organic solvent is oxidized to H2O2 and 2-ethylanthraquinone.[3] The 2-ethylanthraquinone is then reduced and recycled back into the process.

Silicates and silica

 

Most chemically combined oxygen is locked in a class of polymers in the process.

Water-Quartz is the mineral form of silica in nature and the most common deposits of quartz are in sand.

In organic compounds

Most of the thousands of organic compounds that contain oxygen are not made by direct action of oxygen. Many of the compounds that are directly created by a reaction with oxygen are commercially important. Examples and the reactions that form them include:[4]

  ethylene glycol.

C2H4 + 1/2 O2 -catalyst-> C2H4O

epoxy compounds.

CH3CHO + O2 -catalyst-> CH3(COOH)O

Among the most important classes of organic compounds that contain oxygen are (where "R" is an organic group): alcohols (R-OH) such as ethylacetate.

Of the organic compounds with biological relevance, carbohydrates (such as asparagine.

Oxygen also occurs in DNA.

References

  1. ^ Cook 1968, p.505
  2. ^ Cotton, F. Albert and Wilkinson, Geoffrey (1972). Advanced Inorganic Chemistry: A comprehensive Text. (3rd Edition). New York, London, Sydney, Toronto: Interscience Publications. ISBN 0-471-17560-9.
  3. ^ a b c d e Cook 1968, p.506
  4. ^ a b c d e Cook 1968, p.507
  • Cook, Gerhard A.; Lauer, Carol M. (1968). "Oxygen", in Clifford A. Hampel: The Encyclopedia of the Chemical Elements. New York: Reinhold Book Corporation, 499-512. LCCN 68-29938. 

See also
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Oxygen_compounds". A list of authors is available in Wikipedia.