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Divya posted an Question

November 24, 2020 • 23:30 pm

25 points

IIT JAM
Chemistry (CY)

Push-pull effect

Sir can you explain what is CAPTODATIVE EFFCT (push-pull effect)

2 Answer(s)

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Suman Kumar

The captodative effect is the stabilization of radicals by a synergistic effect of an electron-withdrawing substituent and an electron-donating substituent. ... These stabilization mechanisms lead to an enhanced rate for free-radical reactions
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Priyanshu kumar Best Answer

check this
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sir that means the compounds having resonance will exhibit this effect right
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yes and due to increased resonance structures this effect arises
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yes sir got it
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sir in this how can we explain the stability
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https://chemistry.stackexchange.com/questions/85046/what-is-the-reason-for-the-exceptional-stability-of-tricyclopropyl-cyclopropenyl read this article
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sir 2nd compound exhibit more hyperconjugation structures than first compund
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more hyperconjugation means more stable
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Phenyl groups are excellent at delocalising a positive charge when it overlaps with its π system. In that case the cyclopropenium ring is too small and the rings are too large, so they have to twist out of plane and therefore conjugation is not ideal.so less stable
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in material order was given wrong sir
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now clarified sir.Thank you so much sir
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