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Many hypothetical oxocarbons have been studied by theoretical methods but have yet to be detected. Examples include oxalic anhydride (C 2 O 3 or O=(C 2 O)=O), ethylene dione (C 2 O 2 or O=C=C=O) [ 17 ] and other linear or cyclic polymers of carbon monoxide (-CO-) n ( polyketones ), [ 18 ] and linear or cyclic polymers of carbon dioxide (-CO 2 ...
As a rule, however, these neutral oxocarbons are less stable than the corresponding anions. Thus, for example, the stable carbonate anion corresponds to the extremely unstable neutral carbon trioxide CO 3; [2] oxalate C 2 O 2− 4 correspond to the even less stable 1,2-dioxetanedione C 2 O 4; [3] and the stable croconate anion C 5 O 2−
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A polycarbonate is an oxocarbon dianion consisting of a chain of carbonate units, where successive carbonyl groups are directly linked to each other by shared additional oxygen atoms.
Ethylene dione or ethylenedione, also called dicarbon dioxide, Carbon peroxide, ethenedione, or ethene-1,2-dione, is a chemical compound with the formula C 2 O 2 or O=C=C=O.It is an oxide of carbon (an oxocarbon), and can be described as the carbon-carbon covalent dimer of carbon monoxide. [1]
In chemistry, peroxycarbonate (sometimes peroxocarbonate, IUPAC name: oxocarbonate or oxidocarbonate) or percarbonate is a divalent anion with formula CO 2− 4.It is an oxocarbon anion that consists solely of carbon and oxygen.
In chemistry, peroxydicarbonate (sometimes peroxodicarbonate) is a divalent anion with the chemical formula C 2 O 2− 6.It is one of the oxocarbon anions, which consist solely of carbon and oxygen.
Pentacarbon dioxide, officially penta-1,2,3,4-tetraene-1,5-dione, is an oxide of carbon (an oxocarbon) with formula C 5 O 2 or O=C=C=C=C=C=O.. The compound was described in 1988 by Günter Maier and others, who obtained it by pyrolysis of 2,4,6-tris(diazo)cyclohexane-1,3,5-trione (C 6 N 6 O 3).