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Cage effect

 
Sci-Tech Dictionary: cage effect
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(′kāj i′fekt)

(physical chemistry) A phenomenon involving the dissociation of molecules unable to move apart rapidly because of the presence of other molecules, with the result that the dissociation products may recombine.

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Wikipedia: Cage effect (chemistry)
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The cage effect in chemistry describes how properties of a molecule are affected by its surroundings.

  • In a solvent a molecule is often more accurately described existing in a cage of solvent molecules, the so-called solvent cage.
  • In a gas at low pressure a normally highly reactive and short lived molecule can be contained.
  • specific host-guest interactions occur in inclusion compounds
  • Reactions occur when a molecule occasionally "jumps out" and meets another molecule.
  • Typical cage lifetime in a solvent cage 10−11s

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