Definition

1. Noun:
   • A univalent hydrocarbon radical: The ethyl radical is the chemical group with the formula C₂H₅⁻. It is derived from ethane (C₂H₆) by the removal of one hydrogen atom, resulting in a species with an unpaired electron, making it highly reactive.

Usage Examples

• Noun:
  • In organic chemistry, the ethyl radical is a key intermediate in many free-radical reactions.
  • The experiment demonstrated the formation of the ethyl radical during the photolysis of diethyl ketone.

Advanced Usage

• "Ethyl radical abstraction": Refers to a reaction where an ethyl radical removes an atom, typically hydrogen, from another molecule.
  • The process involves ethyl radical abstraction from the substrate.
• "Ethyl radical addition": Describes a reaction where an ethyl radical adds across a double or triple bond.
  • The polymerization is initiated by ethyl radical addition to the monomer.

Variants and Related Words

• Ethyl group (n): Often used interchangeably in casual contexts, though technically an "ethyl group" (C₂H₅⁻) is the anion, while the "ethyl radical" has an unpaired electron. In many organic mechanisms, they are discussed similarly.
  • The ethyl group is a common substituent in organic compounds.
• Ethane (n): The parent alkane (C₂H₆) from which the ethyl radical is derived.
• Free radical (n): The general class of highly reactive species to which the ethyl radical belongs.

Synonyms

• C₂H₅⁻: The chemical formula used as a synonym in scientific literature.
• Ethyl (in context): In many chemical discussions, "ethyl" alone can imply the radical when the context is about reaction mechanisms (e.g., "ethyl propagation step").

Related Phrases and Concepts

• Radical chain reaction: A type of chemical reaction where the ethyl radical may act as a chain carrier.
  • The halogenation of ethane proceeds via a radical chain reaction involving the ethyl radical.
• Radical initiator: A substance that generates radicals, such as ethyl radicals, to start a reaction.
• Stability of radicals: A topic discussing why primary radicals like the ethyl radical have a certain reactivity compared to methyl or tertiary radicals.

Noun

1. the univalent hydrocarbon radical C2H5 derived from ethane by the removal of one hydrogen atom