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Reaction Intermediates
Short lived fragments that are known as reaction intermediates result from homolytic and heterolytic bond fission. The significant reaction substances are carbanions,carbocations, benzyne, carbenes, free radicals, and nitrenes.
Characteristic
Free radical
Carbocation
Carbanion
Carbene
Nature
Neutral having odd electron
Positive charge on C
Negative charge on C
Neutral, divalent with 2 unshared electrons
Hybridisation
sp2
sp3 (non-conjugated)
sp2 (Conjugated)
(i) sp2 (singlet)
(ii) sp (triplet)
Structure
Planar
Pyramidal/Planar
(i) Planar (singlet)
(ii) Linear (triplet)
Magnetism
Paramagnetic
Diamagnetic
(i) Diamagnetic
(ii) Paramagnetic
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