Structural isomers are isomers that have the same component atoms but they are arranged differently from each other. Structural isomerism is also known as constitutional isomerism.
Types of Structural Isomers
- Skeletal isomerism (chain isomerism) – structural isomers in which components of the skeleton are arranged in a different order.
- Position isomerism (regioisomerism) – constitutional isomers in which a functional group or substituent changes position on a parent structure.
- Functional group isomerism – structural isomers with the same molecular formula, but with atoms connected differently
- Cyclohexane and hex-1-ene are examples of functional group structural isomers.
- Butane and isobutane (C 4 H 10 ) are structural isomers of each other.