EZisomeria

EZisomerism is a type of stereoisomerism that occurs in molecules containing one or more double bonds. It is a specific case of geometric isomerism, where the spatial arrangement of atoms around a double bond results in different configurations. The term "EZ" is used to describe the relative orientation of the substituents on each side of the double bond.

In EZisomerism, the substituents are classified as either higher or lower priority based on their atomic number or mass. The higher priority substituent is assigned the prefix "E" (entgegen, meaning "against" in German) if it is on the same side of the double bond as the lower priority substituent on the opposite side. Conversely, the prefix "Z" (zusammen, meaning "together" in German) is assigned if the higher priority substituent is on the same side as the higher priority substituent on the opposite side.

EZisomerism is particularly relevant in organic chemistry, where it can affect the physical and chemical properties of molecules. For example, the EZ configuration of a molecule can influence its reactivity, stability, and biological activity. Understanding EZisomerism is crucial for predicting and controlling the behavior of organic compounds in various chemical and biological contexts.