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Resonance Effect

In which of t...

Question

In which of the following compound, resonance is not possible:

C H_{2} = C H \oplus N M e_{3}

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C H_{3} C H \oplus N M e_{3}

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C H_{2} - C H_{2} \oplus N M e_{3}

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C H_{2} = C H \oplus N M e

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Solution

The correct option is A $C H_{2} = C H \oplus N M e_{3}$
In the molecule, $C H_{2} = C H \oplus N M e_{3}$ resonance is not possible. There is no lone pair of electrons on N atoms as all valence electrons on N atom are involved in bond formation.

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Similar questions

Draw the resonance structures for the following compounds. Show the electron shift using curved-arrow notation.

(a) C₆H₅OH (b) C₆H₅NO₂ (c) CH₃CH = CH – CHO

(d) C₆H₅CHO (e) (f)

C H_{3} - C H_{2} - C H_{3} | C H - C H_{2} - C H_{2} - C H_{2} - C H_{2} - C H_{2} - C H_{2} - C H_{2} - C H_{2} - C H_{3} | C H - C H_{3}

C H_{2} = C H - . . N H - C H_{3}

C H_{2} = C H - . . O . . - C H_{3}

C H_{2} = C H - . . O . . - C H = C H_{2}

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

I U P A C

C H_{3} - C H = C H - C H_{2} - C H = C H - C H - C H_{2} - C H = C H_{2}

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C_{2} H_{5}

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