CBSE Class 11-science Answered
Explain that halogens are o-, p- directors, but are deactivating.
Asked by Topperlearning User | 01 Jun, 2016, 02:59: PM
Expert Answer
The electronegative halogens inductively withdraw e-(s)from all the carbon atoms of the ring of the σ complex, and the o- , p- and m- benzonium ions each have a higher ∆H‡than that of the cation from benzene .The halogens have unshared electrons and can delocalize electron density to the o- and p-carbon atoms. Halogens are said to be Π-donating but σ - withdrawing.
Answered by | 01 Jun, 2016, 04:59: PM
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