Why transition state for first step of electrophilic addition for alkyne less stable than alkene?
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alkynes are less stable then alkenes and alkanes despite the bond being stronger. This is not really intuitive, because you'd think that stronger bonds are more stable, correct? But in this case, the stronger bonds in alkenes/alkynes have higher bond energy and thus more unstable than alkanes.
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In an alkyne,in the transition state a vinylic carbocation is formed where as in an alkene vinylic carbocation is not formed. Vinylic carbocation is very unstable.
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