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If in halobenzenes halogen does not resonate then how come they are ortho-para orienting

If in halobenzenes halogen does not resonate then how come they are ortho-para orienting

Grade:Upto college level

1 Answers

askiitian.expert- chandra sekhar
10 Points
12 years ago

Hi sudarshan,

Benzene shows  maximum resonance than chloro benzene....... chloro benzene shows its resonance structures in such a way that its chlorine atom lone pairs involvement into the planarity is not so perfect.........so it is aromtic...... and it shows the ortho para effects due to a small extent of delocalisation....

we can consider the resonance energies and can compare them and say that choro benzene is having less resonance energy than benzene........

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