Tetracarbon dioxide

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Science and technology

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What Wikipedia says

Tetracarbon dioxide is an oxide of carbon, a chemical compound of carbon and oxygen, with chemical formula C4O2 or O=C=C=C=C=O. It can be regarded as butatriene dione, the double ketone of butatriene — more precisely 1,2,3-butatriene-1,4-dione.

Excerpt from the Wikipedia article “Tetracarbon dioxide”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Ben Mills and Jynto, Public domain, via Wikimedia Commons.