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Organic Chemistry

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20 Apr 2009 21:57:31 IST

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Is phenyl group electron releasing or electron withdrawing?

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Is phenyl group electron releasing or electron withdrawing?

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abhilash

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20 Apr 2009 22:22:25 IST

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Phenyl group is a electron withdrawing group by both -I and -R

Aditya

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20 Apr 2009 22:29:01 IST

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Are you sure ?

Few minutes before i read that its electron releasing....

djdylan2000. bits goa eee

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20 Apr 2009 22:46:52 IST

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abilash is rit. e- withdrawing

tejas

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20 Apr 2009 22:52:27 IST

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yup it is EWG....

Aditya

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20 Apr 2009 22:53:45 IST

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thanks guys...

NugoRama

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20 Apr 2009 22:55:03 IST

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cmon guys ,,,,

phenyl is weakly activating ..and an o ,p directing geroup

Tejal Dhabhai

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20 Apr 2009 22:55:37 IST

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its an EWG

ashish navalakha

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20 Apr 2009 23:30:29 IST

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The resonance possibilities for an phenyl(aromatic group) allow it to serve either as an electron donating substituent when the attached atom needs electrons (carbocation) or as an electron withdrawing substituent when the attached atom has an unshared pair to share (oxygen or nitrogen). so u see it can act as both but by inductive effect, phenyl is e- withdrawing due to sp2 carbon ( and also possible is that rs structure of phenyl ring when in resonance with lp are more stable)so its e- withdrawing nature is more dominat.....

sri_1991_10_20

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21 Apr 2009 17:28:17 IST

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The hydroxyl group, in phenol is directly attached tothe sp2 hybridised carbon of benzene ring which acts as anelectron withdrawing group. Due to this, the charge distributionin phenol molecule, as depicted in its resonance structures,causes the oxygen of ?OH group to be positive.

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