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chelate

chelate

1 9.9
A compound where a metal ion is held by an organic molecule at two or more points forming a ring
  • noun
  • /ˈkiːleɪt/
  • Specialized
translation icon : quelato
  • In chemistry, a chelate is a compound where a metal ion is bonded to an organic molecule at multiple points, forming a ring-like structure.

Examples

  • Rather than iron sulfate, use an iron chelate stock solution.

    Academic text (2001)
  • And so we can review what the chelate effect is.

  • So chelates bind with more than one point of attachment, and metal chelates are unusually stable.

  • Okay, you need magnesium. Dr. Davis recommends Magnesium Malate; I use a Magnesium Acetate/Chelate mix. Maybe Dr. Davis could explain what's the difference?

    Blog text (12)
  • Research shows that the stability of a metal chelate increases when the organic molecule has multiple binding sites.

  • A common example of a chelate is EDTA, which is used to bind metal ions in various industrial applications.

Synonyms

chelate compound
vschelate
  • Specialized
7.5

A compound where a metal atom is held inside a ring of other atoms

has identical meaning but is the shorter single word form
coordination compound
vschelate
  • Specialized
7.0

A central metal atom bonded to surrounding atoms or small groups

focuses on metal bonded in a ring at two or more points

Compounds

chelate compound
  • Specialized
7.5

A compound where a metal atom is held inside a ring of other atoms

How Many Bonds

chelate
  • Specialized
1 9.9
chelation
  • Specialized
8.7
bidentate
  • Specialized
9.9
ligand
  • Specialized
3 8.3

Surface Forms

chelate singular
chelates plural

Morphology

chelate = chela (semi-transparent) = chela + ate

Formed from 'chela' (claw) + the suffix '-ate'; the chemical sense uses a technical 'claw-like' metaphor for multidentate binding, which is specialized and not obvious to general learners.

Etymology

Chelate comes from the Greek word chele meaning 'claw', because chemists thought these molecules grab a metal ion like a claw at two or more points to make a ring. So a chelate is a compound that holds a metal ion tightly in a ring-like way.