cyanide radical

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cyanide radical

A chemist carefully labels a beaker containing a cyanide radical compound.

Definition
  1. Noun:
    • The monovalent group -CN in a chemical compound: In chemistry, the "cyanide radical" refers to the functional group consisting of one carbon atom triple-bonded to one nitrogen atom (written as -C≡N or -CN). This group carries a single negative charge when it exists as an ion (cyanide ion, CN⁻), but as a "radical" group within a larger molecule, it is a key structural unit.
Usage Examples
  • Noun:
    • The toxicity of the compound is attributed to the presence of the cyanide radical.
    • In organic chemistry, a nitrile is any organic compound that contains a cyanide radical.
    • The cyanide radical (-CN) can be found in both lethal poisons and essential biological molecules.
Advanced Usage
  • Chemical Nomenclature: The term "cyanide radical" is often used interchangeably with "cyano group" in systematic chemical naming. For example, methyl cyanide (CH₃CN) is more formally called acetonitrile, where the "-nitrile" suffix indicates the presence of the -CN group.
  • Distinction from Cyanide Ion: While related, the "cyanide radical" as a bound group in a molecule is distinct from the free "cyanide ion" (CN⁻), which is a highly toxic, dissociated anion.
Variants and Related Words
  • Cyano group (n): A synonymous term for the -CN functional group in chemical nomenclature.
    • Benzonitrile contains a cyano group attached to a benzene ring.
  • Nitrile (n): A class of organic compounds characterized by having a -CN group.
    • Acrylonitrile is an important nitrile used in plastics manufacturing.
Synonyms
  • Cyano group: The standard synonym in chemical terminology.
  • Carbonitrile group: A less common but technically accurate synonym.
Notes on Meaning
  • The term "radical" in this context does not imply a free radical (a molecule with an unpaired electron) in the modern chemical sense. It is a traditional term for a group of atoms that behaves as a single unit in chemical reactions and remains unchanged through a series of reactions. The more contemporary and precise term is "functional group" or specifically "cyano group."
cyanide radical

A chemist carefully labels a beaker containing a cyanide radical compound.

Noun
  1. the monovalent group -CN in a chemical compound

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