Why a cis double bond isomer can't continue in the Kreb's cycle

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  The cis and trans isomers have geometries that are locked in a rigid structure that prevents easy rotation around the carbon-carbon double bond. What feature of the double bond locks the molecule in either the cis or the trans arrangement? e.

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  The difference between the two is that the cis isomer is a polar molecule, whereas the trans isomer is non-polar. Both molecules contain polar chlorine-carbon bonds, but in the cis isomer they are both on the same side of the molecule.

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  It's in the shape of a tetrahedron. This occurs in order to maximize the bond angles between each C-H bond and reduce steric hindrance between the hydrogens.

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  A schematic view of this intermediate is attached. Also, one isomer from the cis alkene will be identical to one from the trans alkene as the central C-C bond can rotate!

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