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please explain hyperconjucation

please explain hyperconjucation

Grade:11

2 Answers

sarthak mitra
19 Points
10 years ago

hyperconjugation is a special type of resonance (no bond resonance)here the H atom carries the +ve charge but there is no bond between C & H.there should be at least 1 H atom in alpha C w.r.t( C=C )                                                                                                                    

                                                     C-C-CH=CH2

                                                     1 2  3

2nd C is alpha C . as there is no H there no hyperconjugation occurs.

 

                                                    C-CH2-CH=CH2    after Hc  C-CH-CH=CH2  

                                                                                              H(+)

                                                    1  2     3

at alpha position (2nd C wrt C=C) hyperconjugable H is present so hyperconjugation occurs. 

no.of hyper conjugable  H present in a compound sometimes helps in detecting the stability of the compound.

Godfrey Classic Prince
633 Points
10 years ago

Dear moinack shaikh,

In organic che,mistry, hyperconjugation is the interaction of the electrons in a sigma bond (usually C–H or C–C) with an adjacent empty (or partially filled) non-bonding p-orbital or antibonding n orbital or filled π orbital, to give an extended molecular orbital that increases the stability of the system. Only electrons in bonds that are β to the positively charged carbon can stabilize a carbocation by hyperconjugation.

 

Hope this helped you immensely...

All the Very Best & Good Luck to you ...

Regards,

AskIITians Expert,

Godfrey Classic Prince

IIT-Madras

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