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Encyclopedia > Carbonyl group

In chemistry, a carbonyl group is a functional group composed of an atom of carbon double-bonded to an atom of oxygen. It is the functional group present in aldehydes (where it is located terminally) and ketones (internally), and forms the basis for several other functional groups, such as those of carboxylic acids (alcohol-branched carboxyl group) and amides (NH-branched).

The carbon-oxygen double bond absorbs infrared electromagnetic radiation at wavenumbers between approximately 1760–1665 cm_1. In IR spectroscopy, such characteristic absorption is commonly known as the "carbonyl stretch" and is present in ketones, aldehydes, esters, carboxylic acids, and other carbonyl-containing compounds.

  Results from FactBites:
Carbonyl - Wikipedia, the free encyclopedia (366 words)
In organic chemistry, a carbonyl group is a functional group composed of a carbon atom double-bonded to an oxygen atom.
Examples of unsaturated carbonyls are acrolein, mesityl oxide, acrylic acid and maleic acid.
The carbonyl group, be it an aldehyde or acid, draws electrons away from the alkene and the alkene group in unsaturated carbonyls are therefore deactived towards an electrophile such as bromine or hydrochloric acid.
Carbonyl sulfide - Wikipedia, the free encyclopedia (330 words)
Carbonyl sulfide is the major sulfur compound naturally present in the atmosphere at 0.5 (± 0.05) ppb and is an important part of the global sulfur cycle.
Carbonyl sulfide is a component of volcanic gasses and gasses emitted by deep sea vents.
Carbonyl sulfide is transported into the stratospheric sulfate layer where it is oxidized to sulfuric acid.
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