chelate

Thân thiện

A scientist adds a reagent to form a chelate in a test tube.

Definition

1. Adjective:

   • Having or resembling chelae or claws: Describes a structure, typically in animals like crabs or lobsters, that is shaped like or functions as a pincer or claw.
   • Relating to or characterized by chelation: Pertaining to a specific chemical bonding process where a central metal ion is bound by a molecule at two or more points.

2. Noun:

   • A heterocyclic compound having a metal ion attached by coordinate bonds to at least two nonmetal ions: A chemical compound in which a central metal atom is bonded to a larger organic molecule (a ligand) in a ring-like structure, typically forming a very stable complex.

3. Verb:

   • Form a chelate, in chemistry: The process by which a chelating agent binds to a metal ion, forming a stable, ring-shaped complex.

Usage Examples

• Adjective:

  • The crab's chelate appendages are used for grasping food.
  • EDTA is a common chelating agent used in chelate therapy.

• Noun:

  • Chlorophyll is a chelate of magnesium.
  • The scientist studied the stability of the iron chelate.

• Verb:

  • The organic ligand will chelate the free copper ions in the solution.
  • This compound is designed to chelate heavy metals for removal.

Advanced Usage

• "Chelate effect": A chemical term describing the enhanced stability of chelate complexes compared to complexes with non-chelating ligands.

  • The chelate effect explains why EDTA forms such stable complexes with metal ions.

• "Chelate ring": The ring structure formed when a metal ion is bound by a chelating ligand.

  • A five-membered chelate ring is often particularly stable.

Variants and Related Words

• Chelation (n): The process or action of forming a chelate.
  • Chelation is used in industrial water softening.
• Chelating (adj): Describing an agent or process that forms chelates.
  • Chelating resins are used to extract metals.
• Chelator (n): A chelating agent; a substance that causes chelation.
  • The medication acts as a chelator for excess iron.

Synonyms

• Adjective (claw sense): Pincer-like, clawed.
• Noun/Verb (chemical sense): Complex, sequester (verb), coordinate (verb).

Related Phrases

• Chelate complex: Another term for the compound formed by chelation.
  • The formation of a chelate complex prevents the metal from reacting.
• Metal chelate: A chelate where the central ion is a metal.
  • Metal chelates are important in biological systems.

Học thuật

Adjective

1. having or resembling chelae or claws
2. relating to or characterized by chelation

Noun

1. a heterocyclic compound having a metal ion attached by coordinate bonds to at least two nonmetal ions

Verb

1. form a chelate, in chemistry

Từ đồng nghĩa

• chelated
• chelate compound