Definition

1. Noun:
   • The monovalent group -CN in a chemical compound: A functional group in organic chemistry consisting of a carbon atom triple-bonded to a nitrogen atom, with the formula -C≡N. It is characteristic of nitriles and cyanides.

Usage Examples

• Noun:
  • The presence of a cyano group makes the compound more polar.
  • Acetonitrile contains a methyl group attached to a cyano group.

Advanced Usage

• In chemical nomenclature: The prefix "cyano-" is used to indicate the presence of this group in a molecule.
  • The compound is named 2-cyanopropane.
• As a ligand in coordination chemistry: The cyano group can bind to metal centers through the carbon atom, forming cyanide complexes.
  • The cyano group acts as a strong field ligand in the complex.

Variants and Related Words

• Cyanide ion (CN⁻): The negatively charged anion, which is distinct from the cyano group as a substituent.
• Nitrile: An organic compound containing a cyano group bonded to an alkyl or aryl group (R-CN).
• Cyano-: A prefix used in systematic chemical names.

Synonyms

• Cyanide group: Often used interchangeably in some contexts, though "cyanide" more specifically refers to the anion or salts containing CN⁻.
• Nitrilo group: An older, less common term.

Related Phrases and Terminology

• Cyanoacrylate: A type of fast-acting adhesive whose molecules contain a cyano group.
  • Cyanoacrylate glue is commonly known as "super glue".
• Hydrogen cyanide (HCN): A simple, volatile compound where a hydrogen atom is attached to the cyano group.

Noun

1. the monovalent group -CN in a chemical compound