alkylidene

chemical compound

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June 18, 2026

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An alkylidene is a bivalent aliphatic radical derived from an alkane by removing two hydrogen atoms from the same carbon atom. For example, ethylidene is an alkylidene.1

Alkenes, which contain a carbon-carbon double bond, and alkynes, with a carbon-carbon triple bond, are types of unsaturated aliphatic hydrocarbons. These multiple bonds are considered functional groups in organic chemistry, representing sites of high reactivity. The presence of these multiple bonds allows alkenes and alkynes to undergo addition reactions, unlike alkanes which only have single bonds and are considered saturated.2345

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organometallic compound
Alkylidene ligands
Alkylidene ligands, such as CH₂, CHR, or CR₂, form the M=C d-p double bonds (i.e., bonds between the d orbitals of the metal and the p orbitals of the carbon), and their metal compounds are often called carbenes. The first stable metal carbene…
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Alkylidene ligands, such as CH₂, CHR, or CR₂, form the M=C d-p double bonds (i.e., bonds between the d orbitals of the metal and the p orbitals of the carbon), and their metal compounds are often called carbenes. The first stable metal carbene…
Read More