E geometry

Definition

E geometry describes a type of stereochemistry observed in alkenes where the two highest priority substituents on either carbon of the double bond are on opposite sides. This configuration is determined using the Cahn-Ingold-Prelog priority rules, which rank substituents based on atomic number and connectivity.

Related terms

Z geometry: Describes an alkene's stereochemistry where the two highest priority substituents on either carbon of the double bond are on the same side.

Cahn: Ingold-Prelog priority rules - A set of rules used to determine the priority of substituents attached to a stereocenter or double bond based on atomic number and connectivity.

Stereoisomers: Molecules that have the same molecular formula and sequence of bonded atoms (constitution), but differ in the three-dimensional orientations of their atoms in space