Question

What are the geometrical isomers of 2-hexene?

Answer 1

Well you got an internal olefin....

Explanation:

...i.e. `H_3stackrel(1)Cstackrel(2)CH=stackrel(3)CHstackrel(4)CH_2CH_2stackrel(6)CH_3`...and `stackrel(1)C` can be cis or trans with respect to `stackrel(4)C`. Now these isomers have the SAME connectivity (what does this mean in the context?), but different geometry....and they are thus geometric isomers. They would differ slightly in boiling, and melting point, and differ more markedly in their chemical reactivity.

Answer 2

The isomers are cis-hex-2-ene and trans-hex-2-ene.

Explanation:

cis-hex-2-ene

The cis isomer has the two `"H"` atoms on the same side of the double bond.

trans-hex-2-ene

The trans isomer has the two `"H"` atoms on opposite sides of the double bond.