Which of the following represents the correct order of stability of carbocations ?

(C H_{3})_{3} C^{+} > C H = C H + C H_{2} > C_{6} H_{5} + C H_{2} > (C H_{3})_{2} + C H

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(C H_{3})_{3} C^{+} > C_{6} H_{5} + C H_{2} > (C H_{3})_{2} + C H > C H_{2} = C H - + C H_{2}

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C H_{2} = C H - + C H_{2} > C_{6} H_{5} + C H_{2} > (C H_{3})_{3} C^{+} > (C H_{3})_{2} + C H

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(C H_{3})_{3} + C > C_{6} H_{5} + C H_{2} > C H_{2} = C H - + C H_{2} > (C H_{3})_{2} + C H

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Solution

The correct option is D $(C H_{3})_{3} + C > C_{6} H_{5} + C H_{2} > C H_{2} = C H - + C H_{2} > (C H_{3})_{2} + C H$
$(C H_{3})_{3} C^{+}$ has 9 hyperconjugation and +I effect. Therefore, it is the most stable.

$P h C H_{2}^{+}$ has more resonating structure and hyperconjugation.

$C H_{2} = C H - C H_{2}^{+}$ has resonance in it. $(C H_{3})_{2} C H^{+}$ has +I effect.

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Similar questions

(C H_{3})_{3} C^{-}

(C H_{3})_{2} {C H}^{-}

C H_{3} {C H_{2}}^{-}

C_{6} H_{5} {C H_{2}}^{-}

C H_{3} - C H_{2} - C H_{2} - C H_{2} - B r

(C H_{3})_{2} - C H - C H_{2} - B r

(C H_{3})_{2} - C H - B r

C H_{2} = C H - ⨁ C H_{2}

C_{6} H_{5} - ⨁ C H_{2}

C H_{3} - ⨁ C H - C H_{3}

C H_{2} = C H - C H = C H - + C H_{2}

C H_{2} = C H - + C H - C H = C H_{2}

C H_{2} = C H - + C H - - C H - + C H_{2}

+ C H_{2} - C H = C H - - C H - + C H_{2}

C_{6} H_{5} - C H = C H - C H O \to C_{6} H_{5} - C H_{2} - C H_{2} - C H_{2} O H

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