Chapter 7.4, Problem 7P

Interpretation Introduction

Interpretation:

The configuration of each of the given compounds as Z or E, is to be written.

Concept Introduction:

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Alkenes are assigned E or Z configuration depending on the orientation of the groups attached to the double bonded carbon atoms.

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The priority of the groups attached to each double bonded carbon atom is defined on the basis of the Cahn–-Ingold–-Prelog sequence rules.

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The atomic numbers of the atoms which get directly attached to the double bonded carbon atoms are compared. The atom having the higher atomic numbers gets a higher priority.If the atomic numbers are the same, then the next atoms attached to them are compared and priorities are assigned.

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When the groups with the higher priority are on the same side of the double bond, the alkene is said to have Z configuration.When the groups with the higher priority are on the opposite side of the double bond, the alkene is said to have E configuration.