Stability of carbocations and inductive effect

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SUMMARY

The stability of carbocations CH3-C+=CH2 and CH3-CH+-CH3 is influenced by the inductive effect of substituents. The CH3-CH+-CH3 carbocation is more stable due to the +I effect of the alkyl groups, which donate electron density and stabilize the positive charge. In contrast, the =CH2 group in CH3-C+=CH2 does not exhibit a significant +I effect, leading to reduced stability. The empty orbital in CH3-CH+-CH3 is an sp2 hybridized orbital, while CH3-C+=CH2 has an empty p orbital, which is less stable with a positive charge.

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Prashasti
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Which carbocation is more stable?
1) CH3-C+=CH2
2) CH3-CH+-CH3

Basically, I want to know whether the =CH2 group is electron donating or electron withdrawing. Does it show +I effect like alkyl groups?
I mean, like in 2) the carbocation will get stabilised due to the electron donating power of alkyl groups (as it shows +I effect).
 
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