In chemistry, an oxocarbon or oxide of carbon is a chemical compound consisting only of carbon and oxygen.[1][2] The simplest and most common oxocarbons are carbon monoxide (CO) and carbon dioxide (CO2). Many other stable (practically if not thermodynamically) or metastable oxides of carbon are known, but they are rarely encountered, such as carbon suboxide (C3O2 or O=C=C=C=O) and mellitic anhydride (C12O9).
CO Carbon monoxide
CO2 Carbon dioxide
C3O2 Carbon suboxide
C12O9 Mellitic anhydride
Many other oxides are known today, most of them synthesized since the 1960s. Some of these new oxides are stable at room temperature. Some are metastable or stable only at very low temperatures, but decompose to simpler oxocarbons when warmed. Many are inherently unstable and can be observed only momentarily as intermediates in chemical reactions or are so reactive that they exist only in gas phase or have only been detected by matrix isolation.
Graphene oxide and other stable polymeric carbon oxides with unbounded molecular structures exist.[3][4]
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IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version: (1995) "Oxocarbons". doi:10.1351/goldbook.O04375
^West, R. (ed.) (1980), Oxocarbons. Academic Press, New York.
^Cite error: The named reference hummers was invoked but never defined (see the help page).
^Cite error: The named reference snow was invoked but never defined (see the help page).
chemistry, an oxocarbon or oxide of carbon is a chemical compound consisting only of carbon and oxygen. The simplest and most common oxocarbons are carbon...
In chemistry, an oxocarbon anion is a negative ion consisting solely of carbon and oxygen atoms, and therefore having the general formula C xOn− y for...
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hydrogensquarate anion is the divalent squarate anion C4O2−4. This is one of the oxocarbon anions, which consist only of carbon and oxygen. Squaric acid is a reagent...
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nickel tetracarbonyl), mellitic anhydride (C12O9), and other exotic oxocarbons are also considered inorganic by some authorities.[citation needed] Nickel...
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((N≡C−)2C=)3(C5O2)2−. It is one of the pseudo-oxocarbon anions, as it can be described as a derivative of the croconate oxocarbon anion C 5O2− 5 through the replacement...
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Carbon compounds#Carbon halides Carbon compounds#Carbon-oxygen compounds Oxocarbon Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements...
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chemistry, while silicate minerals have a structural complexity unseen in oxocarbons. Silicon tends to resemble germanium far more than it does carbon, and...
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dianion C4O2−4, which consists only of carbon and oxygen, making it an oxocarbon anion. Partial ionization yields the monovalent hydrogen acetylenedicarboxylate...
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