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Which is a more stable carbocation :triphenyl carbocation or trimethyl carbocation

Jupjyot , 8 Years ago
Grade 12
anser 2 Answers
Spriha sil
Triphenyl carbocation is a more stable carbocation than trimethyl carbocation.This is due to -I effect in methyl groups which is absent in phenyl.
Last Activity: 8 Years ago
sreehari
Triphenyl carbocation is stabilized through resonance. The positive charge is delocalized among all three phenyl groups.
The trimethyl cation is stabilized through Hyperconjugation of 9 Hydrogens and +I effect . This gives lower stabilization compared to the delocalization of positive charge in triphenyl carbocation. 
Hence triphenyl carbocation is more stabler than trimethyl carbocation.
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Last Activity: 8 Years ago
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