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词汇 carbocation
释义

Definition of carbocation in English:

carbocation

noun ˌkɑːbə(ʊ)ˈkatʌɪənˌkärbəˈkāSHən
Chemistry
  • another term for carbonium ion
    Example sentencesExamples
    • The resulting esters generate carbocations that react with DNA.
    • Therefore, all such red-shifted pigments are believed to be highly delocalized, bond-equalized carbocations.
    • Some examples of positively charged electrophiles are the hydronium ion, nitronium ions, metal ions, and carbocations.
    • All carbocations are strong alkylating agents with a high affinity for groups which donate or share their electrons, such as halide ions, hydroxyl anions and amines.
    • The methyl carbocation, CH 3 + is the least stable carbocation.

Origin

1950s: from carbo- + cation.

Definition of carbocation in US English:

carbocation

nounˌkärbəˈkāSHən
Chemistry
  • another term for carbonium ion
    Example sentencesExamples
    • The methyl carbocation, CH 3 + is the least stable carbocation.
    • The resulting esters generate carbocations that react with DNA.
    • Therefore, all such red-shifted pigments are believed to be highly delocalized, bond-equalized carbocations.
    • Some examples of positively charged electrophiles are the hydronium ion, nitronium ions, metal ions, and carbocations.
    • All carbocations are strong alkylating agents with a high affinity for groups which donate or share their electrons, such as halide ions, hydroxyl anions and amines.

Origin

1950s: from carbo- + cation.

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