why butyne is more polar than butene?

[predent7]

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butyne is more polar than butene, so bp is higher..
why is it more polar ?

 

[orgohacks]

butyne is more polar than butene, so bp is higher..
why is it more polar ?

which butene? 1-butene, trans 2-butene, cis 2-butene will all have different boiling points.

which butyne? 1 or 2?

Might have better van der waals overlap with butyne (not as kinky as butene, therefore can stack with each other better).

 

[predent7]

Oh, I see.
It was 1-butyne and 1 butene.