Benzoquinonetetracarboxylic acid | |
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3,6-dioxocyclohexa-1,4-diene-1,2,4,5-tetracarboxylic acid |
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Identifiers | |
PubChem | 350050 |
Jmol-3D images | Image 1 |
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Properties | |
Molecular formula | C10H4O10 |
Molar mass | 284.14 g/mol |
(verify) (what is: / ?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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Infobox references |
In chemistry, 1,4-benzoquinonetetracarboxylic acid is an organic compound with formula C10H4O10, or (C6O2)(-(CO)OH)4, which can be viewed as deriving from para-benzoquinone C6H4O2 through replacement of the four hydrogen atoms by carboxyl functional groups -(CO)OH.
By removal of four protons, the acid is expected to yield the anion C10O4−
10, benzoquinonetetracarboxylate, which is one of the oxocarbon anions (consisting solely of oxygen and carbon. By loss of 1 through 3 protons it forms the anions C10H3O−
10, C10H2O2−
10, and C10H1O3−
10, called respectivey trihydrogen-, dihydrogen-, and hydrogenbenzoquinonetetracarboxylate. The same names are used for the corresponding esters.
Removal of two water molecules gives the compound benzoquinonetetracarboxylic dianhydride, C10O8, one of the oxides of carbon.[1]
The acid can be obtained by from durene (1,2,4,5-tetramethylbenzene) via dinitropyromellitic and diaminopyromellitic acids.[2][3][4]