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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- IIT JAM
- Chemistry (CY)
A d mevuus eas yuesuwd 1 rank the following molecules in order of electrophilicity (from most to least electrophilic) ch () me () me ch (iv) me och () me° ci ch
A D mevuus eas yuesuwD 1 Rank the following molecules in order of electrophilicity (from most to least electrophilic) CH () Me () Me CH (Iv) Me oCH () Me° CI CH (a) 1I > Il1 > IV>I (b)1> IV> Ill > II (d) I> Il > IV> II (c) II> IV> IlI > I ba hdea.arauns af methanol triiluoroacetic acid phenol and benzyl
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Suman Kumar Best Answer
Option A correct Shristy
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The more electronegative leaving groups withdraw electron density from the carbonyl, thereby increasing its electrophilicity
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Read this Shristy
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See this order
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Acid chloride are highly reactive. Amide are least reactive
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but S is good donar as compared to O
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So S will decrease the electrophilicity ??
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I will give 2 reason.
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Ist S is from 3rd period & Carban is from 2nd period . So resonance will be poor due to poor overlapping
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2nd S also has vacant d orbital. So it can use it to withdraw eletron.
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You must have read that thiopene is more aromatic than pyrrole & furan due to extended delocalization using d-orbital
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ok mam electronegativity wala b concept lga skte h na ?
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How Shristy
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O has more electronegativity so it can hold its electron pair as compared to Sulphur
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Yes Shristy you can apply. But for resonance first overlapping of orbital matter. 2P-2P overlapping is better than 2P-3P. So resonance is better in case of oxygen. This is dominant factor.
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ok mam aagya smjh me thanku
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Boddu rama krishna
acid chloride is most electrophilic in nature
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Priyanshu kumar
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option A is correct
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II is most electrophilic
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4th is least
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got shristy??
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please respond shristy
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S is good donar as compared to oxygen ?
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so S will decrease the electrophilicity
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but here poor resonance occur in case of S
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got this...
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Any doubt shristy you can discuss with me😊
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Boddu rama krishna
acid chloride is most reactive...next ester or thioester
elctrophilic in nature