explain-why-the-cis-and-trans-of-the-given-alkene-shows-no-coupling-between-the-

Question

Explain why the cis and trans isomers of the given alkene show no coupling between the a and c, as well as between the b and c protons.

Structural formulas of cis and trans isomers of 3-bromopent-2-enoic acid, highlighting proton positions.

Accepted Answer

There is no coupling between a and c and between b and c protons because they are 4 and 6 sigma bonds away from each other, respectively.

Answer

There is no coupling between a and c and between b and c protons because they are both too near to each other.

Answer

There is no coupling between a and c and between b and c protons because they are 6 and 4 pi bonds away from each other, respectively.

Answer

There is no coupling between a and c and between b and c protons because they are 4 and 6 pi bonds away from each other, respectively.