Although chlorine is an electron withdrawing group, yet it is ortho-, para- directing. Why?
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- Опубліковано 20 сер 2024
- Question: Although chlorine is an electron withdrawing group, yet it is ortho-, para- directing in electrophilic aromatic substitution reactions. Why?
Answer:
Chlorine withdraws electrons through inductive effect and releases electrons through resonance. Through inductive effect, chlorine destabilises the intermediate carbocation formed during the electrophilic substitution.
Through resonance, halogen tends to stabilise the carbocation and the effect is more pronounced at ortho- and para- positions. The inductive effect is stronger than resonance and causes net electron withdrawal and thus causes net deactivation. The resonance effect tends to oppose the inductive effect for the attack at ortho- and parapositions and hence makes the deactivation less for ortho- and paraattack. Reactivity is thus controlled by the stronger inductive effect and orientation is controlled by resonance effect
#ncert #haloalkaneandhaloarenes
Great explanation!!
Finally understood the concept after so much of searching
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The way of teaching 👍 mind-blowing ❤
thanks
Wowwww great explanation😊
Thanks
What is the meaning of last line “Reactivity is controlled …
Nice explained
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Thank you sir ji
welcome dear
Great explanation sir!👍
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what an explaination.kudos!!
thanks
Thank you so much!
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Thank you so much sir
welcome
Best explanation
thanks
thanks
thank you so much aap bhagwan ke bande ho
waah
It means -I dominates in case od chlorine.
So which is more acidic parachlorophenol or paramethoxyphenol
methoxy shows +I and decreases acidic strength
maza aa gya sir 🫡
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Kon Kon Oswaal ke book ke questions kerrke yahan aaya Hain 😂
Thnku😊
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Similar answer like( why haloarenes are less reactive towards electrophilic substitution reaction ?)
reason for that answer is partial double bond. although both the answers are about resonance only but still they are different
@@ChemistryConcept ooh ya okay thanks sir
all the best
Sir jese usme bar electrophilic substitution reaction ke liye pucha tha agar sirf +R effect like toh answer Shai nhi hoga
nahi
@@ChemistryConcept sir usme mene pura answer likha tha bas -i effect ko include nhi kara tha ki -i effect bhi usme jada dominant hota hai
mil Jane chahiye marks
THANKS
happy new year