carbonyl
/ˈkɑː(ɹ)bənɪl/ noun C2- A divalent functional group, (-CO-), characteristic of aldehydes, ketones, carboxylic acids, amides, carboxylic acid anhydrides, carbonyl halides, esters and others.
- Any compound of a metal with carbon monoxide, such as nickel carbonyl, Ni(CO)₄.
Plural carbonyls
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