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Structural Isomers

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Also Known AsConstitutional isomers, chain isomers, position isomers, functional group isomers

What is Structural Isomers?

Isomers with the same molecular formula but different connectivity (different bonding arrangements) of atoms. Types include chain isomers, position isomers, and functional group isomers. Structural isomers may have very different physical and chemical properties.

Properties & Characteristics

Structural isomers (constitutional isomers) are molecules with the same molecular formula but different connectivity of atoms — i.e., different structural arrangements. They differ in which atoms are bonded to which. For example, butane (CH₃CH₂CH₂CH₃) and isobutane ((CH₃)₃CH) are structural isomers of C₄H₁₀. Structural isomers generally have different physical and chemical properties.

Uses & Applications

The existence of structural isomers explains the diversity of organic compounds and their properties. Pharmaceutical research exploits structural isomerism to develop drugs with different biological activities. Isomer identification by spectroscopy is a fundamental analytical task.

Safety Information

Structural isomers can have very different toxicological and pharmacological profiles. Isomeric industrial chemicals may have different flammability and toxicity, requiring individual safety assessments.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Structural Isomers
Synonyms Constitutional isomers, chain isomers, position isomers, functional group isomers

Frequently Asked Questions

Isomers with the same molecular formula but different connectivity (different bonding arrangements) of atoms. Types include chain isomers, position isomers, and functional group isomers. Structural isomers may have very different physical and chemical properties.

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