Reaction intermediates, Chemistry

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.

Table

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

sp2

sp3 (non-conjugated)

sp2 (Conjugated)

(i) sp2 (singlet)

(ii) sp (triplet)

Structure

Planar

Planar

Pyramidal/Planar

(i) Planar (singlet)

(ii) Linear (triplet)

Magnetism

Paramagnetic

Diamagnetic

Diamagnetic

(i) Diamagnetic

(ii) Paramagnetic

Posted Date: 4/16/2013 5:13:03 AM | Location : United States







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