Carbene

Below given pdf explains you about the complete information of carbene.
Carbene is the neutral divalent organic species having sextet of electrons  in which four electrons are involved in forming two sigma bonds and two other electrons are unshared. For
example –
H2C — Methylene or methyl carbene
 Highly reactive species
 Short lived
 They occur as intermediate in many organic reactions.
 Carbene is ambiphilic means it can react as both electrophile as well nucleophile.
 Most reactions of carbene are carried out in gas phase or liquid phase.
Note – Hot Methylene has higher energy, high reactivity and low stability.
Carbene may be classified into two categories on the basis of non-bonded electrons which can be
either paired or unpaired – If the non-bonded electrons of a carbene is paired, then it is known as
singlet but if the non-bonded electrons of a carbene is unpaired, then it is known as . . . . .

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