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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: polly on April 08, 2004, 08:01:59 PM

Title: allylic vs. vinylic
Post by: polly on April 08, 2004, 08:01:59 PM

why is allylic more stable then vinylic?

Title: Re:allylic vs. vinylic
Post by: Mitch on April 08, 2004, 08:44:58 PM

Can you draw a resonance for the vinylic ion? Can you draw one for the allylic ion?

Title: Re:allylic vs. vinylic
Post by: polly on April 10, 2004, 07:39:56 PM

thanks- understood.  allylic is much more stable bc the radical carbon adopts an sp2 hybridization which puts the unpaired electron in a p orbital giving a symmetrical structure - having resonance forms.  

Title: Re:allylic vs. vinylic
Post by: Mitch on April 10, 2004, 07:45:30 PM

That was said very well. I don't think I could of said it better.