Definition of carbonium ion in English:

carbonium ion

nounkɑːˈbəʊnɪəm ˌʌɪənkɑrˌboʊniəm ˈaɪˌɑn

Chemistry

An organic cation in which the positive charge is located on a carbon atom.
〔化〕正碳离子，阳碳离子
Example sentencesExamples
- If a carbonium ion is involved in lysozyme catalysis then the TS structure will involve a planar, sp-hybridized C - 1.
- The key step in a unimolecular reaction is the formation of the carbon cation, or carbonium ion, by the departure of the leaving group.
- This paper reviews the concept of carbonium ions, their formation, stability and reactions.
- Geometry optimisation using density function theory at the pBP / DN - level shows the carbonium ion to be trigonal bipyramidal.
- The presence of a water molecule will provide the opportunity for the carbonium ion, and the left side of the ring, to become stable.

Origin

Early 20th century: carbonium from carbo- 'carbon', on the pattern of ammonium.

Definition of carbonium ion in US English:

carbonium ion

nounkärˌbōnēəm ˈīˌänkɑrˌboʊniəm ˈaɪˌɑn

Chemistry

An organic cation in which the positive charge is located on a carbon atom.
〔化〕正碳离子，阳碳离子
Example sentencesExamples
- The presence of a water molecule will provide the opportunity for the carbonium ion, and the left side of the ring, to become stable.
- Geometry optimisation using density function theory at the pBP / DN - level shows the carbonium ion to be trigonal bipyramidal.
- This paper reviews the concept of carbonium ions, their formation, stability and reactions.
- If a carbonium ion is involved in lysozyme catalysis then the TS structure will involve a planar, sp-hybridized C - 1.
- The key step in a unimolecular reaction is the formation of the carbon cation, or carbonium ion, by the departure of the leaving group.

Origin

Early 20th century: carbonium from carbo- ‘carbon’, on the pattern of ammonium.

单词	carbonium ion
释义	Definition of carbonium ion in English: carbonium ion nounkɑːˈbəʊnɪəm ˌʌɪənkɑrˌboʊniəm ˈaɪˌɑn Chemistry An organic cation in which the positive charge is located on a carbon atom. 〔化〕正碳离子，阳碳离子 Example sentencesExamples If a carbonium ion is involved in lysozyme catalysis then the TS structure will involve a planar, sp-hybridized C - 1. The key step in a unimolecular reaction is the formation of the carbon cation, or carbonium ion, by the departure of the leaving group. This paper reviews the concept of carbonium ions, their formation, stability and reactions. Geometry optimisation using density function theory at the pBP / DN - level shows the carbonium ion to be trigonal bipyramidal. The presence of a water molecule will provide the opportunity for the carbonium ion, and the left side of the ring, to become stable. Origin Early 20th century: carbonium from carbo- 'carbon', on the pattern of ammonium. Definition of carbonium ion in US English: carbonium ion nounkärˌbōnēəm ˈīˌänkɑrˌboʊniəm ˈaɪˌɑn Chemistry An organic cation in which the positive charge is located on a carbon atom. 〔化〕正碳离子，阳碳离子 Example sentencesExamples The presence of a water molecule will provide the opportunity for the carbonium ion, and the left side of the ring, to become stable. Geometry optimisation using density function theory at the pBP / DN - level shows the carbonium ion to be trigonal bipyramidal. This paper reviews the concept of carbonium ions, their formation, stability and reactions. If a carbonium ion is involved in lysozyme catalysis then the TS structure will involve a planar, sp-hybridized C - 1. The key step in a unimolecular reaction is the formation of the carbon cation, or carbonium ion, by the departure of the leaving group. Origin Early 20th century: carbonium from carbo- ‘carbon’, on the pattern of ammonium.
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