Question

Question: Label each carbon-carbon double bond in 11-cis-retinal as E or Z. As we will learn in Section 21.11, the isomerization of one double bond in this compound to a less crowded stereoisomer takes place when light strikes the retina of the eye.

Short answer

Answer

E and Z configuration in C=C bonds

Step-by-step solution

E and Z naming

E and Z naming is used to differentiate two stereoisomers when the double bond is surrounded by more than two types of alkyl groups.

Stereoisomers

These are the molecular compounds with the same bonding but different spatial arrangement or linkage of atoms.

Labeling the given compound as E or Z

E and Z configuration in C=C bonds