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Any of the series of unsaturated hydrocarbons containing a triple bond, including acetylene.
- ‘Originally the alkynes were called the acetylenes.’
- ‘The alkyne functional group is the carbon-carbon triple bond.’
- ‘By careful use of appropriate conditions and catalysts alkanes can be converted into other hydrocarbons such as the alkenes and alkynes.’
- ‘Alkanes (sometimes called paraffins) have only single bonds, while alkenes (sometimes called olefins) have a carbon-carbon double bond, and alkynes have a carbon-carbon triple bond.’
- ‘The first step is the addition of the proton to the pi bond of the alkene or alkyne, acting as the electron source.’
Early 20th century: from alkyl + -yne.
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