Definition of alkene in English:

alkene

noun ˈalkiːnˈalˌkēn

Chemistry

Any of the series of unsaturated hydrocarbons containing a double bond, including ethylene and propene.
〔化〕烯属烃
Alkenes have the general formula: CnH₂n
Example sentencesExamples
- Among the 4800 constituents of tobacco smoke, researchers have identified more than 100 alkanes, 150 alkenes and 55 alicyclic hydrocarbons.
- Epoxidation, the conversion of an olefin (an unsaturated alkene hydrocarbon) to a cyclic ether through reaction with hydrogen peroxide, a peracid, or oxygen, is an important chemical technique.
- The functional group of an alkene is its carbon-carbon double bond.
- By careful use of appropriate conditions and catalysts alkanes can be converted into other hydrocarbons such as the alkenes and alkynes.
- This is one of the most common ways of synthesizing alkenes, double-bonded hydrocarbons.

Origin

Late 19th century: from alkyl + -ene.

Definition of alkene in US English:

alkene

nounˈalˌkēn

Chemistry

Any of the series of unsaturated hydrocarbons containing a double bond, including ethylene and propylene.
〔化〕烯属烃
Alkenes have the general formula: CnH₂n
Example sentencesExamples
- The functional group of an alkene is its carbon-carbon double bond.
- By careful use of appropriate conditions and catalysts alkanes can be converted into other hydrocarbons such as the alkenes and alkynes.
- Among the 4800 constituents of tobacco smoke, researchers have identified more than 100 alkanes, 150 alkenes and 55 alicyclic hydrocarbons.
- This is one of the most common ways of synthesizing alkenes, double-bonded hydrocarbons.
- Epoxidation, the conversion of an olefin (an unsaturated alkene hydrocarbon) to a cyclic ether through reaction with hydrogen peroxide, a peracid, or oxygen, is an important chemical technique.

Origin

Late 19th century: from alkyl + -ene.

词汇	alkene
释义	Definition of alkene in English: alkene noun ˈalkiːnˈalˌkēn Chemistry Any of the series of unsaturated hydrocarbons containing a double bond, including ethylene and propene. 〔化〕烯属烃 Alkenes have the general formula: CnH₂n Example sentencesExamples Among the 4800 constituents of tobacco smoke, researchers have identified more than 100 alkanes, 150 alkenes and 55 alicyclic hydrocarbons. Epoxidation, the conversion of an olefin (an unsaturated alkene hydrocarbon) to a cyclic ether through reaction with hydrogen peroxide, a peracid, or oxygen, is an important chemical technique. The functional group of an alkene is its carbon-carbon double bond. By careful use of appropriate conditions and catalysts alkanes can be converted into other hydrocarbons such as the alkenes and alkynes. This is one of the most common ways of synthesizing alkenes, double-bonded hydrocarbons. Origin Late 19th century: from alkyl + -ene. Definition of alkene in US English: alkene nounˈalˌkēn Chemistry Any of the series of unsaturated hydrocarbons containing a double bond, including ethylene and propylene. 〔化〕烯属烃 Alkenes have the general formula: CnH₂n Example sentencesExamples The functional group of an alkene is its carbon-carbon double bond. By careful use of appropriate conditions and catalysts alkanes can be converted into other hydrocarbons such as the alkenes and alkynes. Among the 4800 constituents of tobacco smoke, researchers have identified more than 100 alkanes, 150 alkenes and 55 alicyclic hydrocarbons. This is one of the most common ways of synthesizing alkenes, double-bonded hydrocarbons. Epoxidation, the conversion of an olefin (an unsaturated alkene hydrocarbon) to a cyclic ether through reaction with hydrogen peroxide, a peracid, or oxygen, is an important chemical technique. Origin Late 19th century: from alkyl + -ene.
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