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W allylic and benzylic carbanions are said to have sp2 hybridsation?why?

W allylic and benzylic carbanions are said to have sp2 hybridsation?why?

Grade:12

2 Answers

Ramreddy IIT Patna
askIITians Faculty 49 Points
9 years ago
Allylic and benzylic cabanions are said to have sp2 hybridization because they lone pairs present on carbon involve in delocalization(Resonance). However delocalization is effective if it has more planar arrangement (which provides maximum overlap). So due to this it is said to have sp2 hybridization.
Rakesh kumar
13 Points
5 years ago
Electron present on carbon next to double bond is consumed in in resonance so resultant partial double bond character of  carbon with two hydrogen form sp2 hybridisation ,make the structure planar
 

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