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Chemical compound From Wikipedia, the free encyclopedia
Pentacarbon dioxide, officially penta-1,2,3,4-tetraene-1,5-dione, is an oxide of carbon (an oxocarbon) with formula C5O2 or O=C=C=C=C=C=O.
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Names | |
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IUPAC name
penta-1,2,3,4-tetraene-1,5-dione | |
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Properties | |
C5O2 | |
Molar mass | 92.05 g/mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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 (C6N6O3).[1][2]: 97 Diazo transfer can produce the latter compound from phloroglucinol.[1] It is stable at room temperature in solution.[1] The pure compound is stable up to −90 °C, at which point it polymerizes.[2]: 100
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