IIT JEE , AIEEE Forum - Chemistry , Organic Chemistry

Aatish

What is Hyperconjugation?

karuna

hyperconjugation is also called as no bond resonance . there should be a conjugated system like altenate single and double present or sp2-sp3 conjugation as well as atleast one allylic hydrogen shoud be there. it describe the stability of the system more the hyperconjugated structure more stable is the system like in case of carbocation tertiory cation is more stable then secondary and secondary is more stable then primary. tertiory form 9 hyperconjugated structure secondary form 6 and primary form 3 hyperconjugated structure

Aatish

plz use simple language as per standards of 11th class child

magiclko

Hyperconjugation in organic chemistry is the stabilizing interaction that results from 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 pi orbital to give an extended molecular orbital that increases the stability of the system. Only electrons in bonds that are ? to the positively charged carbon can stabilize a carbocation by hyperconjugation.

Hyperconjugation can be used for rationalizing a variety of chemical phenomena, including the anomeric effect, the gauche effect, the rotational barrier of ethane, the beta-silicon effect, the vibrational frequency of exocyclic carbonyl groups, and the relative stability of substituted carbocations. Hyperconjugation has also been shown to be the correct explanation for the preference of the staggered conformation rather than the old textbook notion of steric hindrance

magiclko

u can also see it on http://www.chem.ucalgary.ca/courses/351/Carey/Useful/hyperconjugation.html

Aatish

Thanks for your reply plz can you tell me something about u

magiclko

what u wanna knw???

arun-rashi

you study the material of GOIIT in fundamentals of organic chemistry ,hyperconjugation and its application.

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