Structural isomer

Structural isomerism or constitutional isomerism is a form of isomerism in which molecules with the same molecular formula have bonded together in different orders, as opposed to stereoisomerism. There are multiple forms of structural isomerism, including chain isomerism, functional group isomerism, tautomeric isomerism, positional isomerism, ring-chain isomerism, and functional isomerism.

Chain Isomerism

Chain isomerism, or n-isomerism, is a form of isomerism where the carbon atoms in a carbon chain are arranged in different ways. This form of isomerism is most commonly found in alkanes.

Functional Group Isomerism

Functional group isomerism occurs when one functional group is split up and distributed to make another functional group. This form of isomerism is common in organic compounds.

Tautomeric Isomerism

Tautomeric isomerism is a form of isomerism where the isomers are in equilibrium, and the equilibrium is fast enough that both isomers can be isolated separately. This form of isomerism is common in organic compounds.

Positional Isomerism

Positional isomerism is a form of isomerism where the functional group remains the same but the position of the functional group on the chain changes. This form of isomerism is common in organic compounds.

Ring-Chain Isomerism

Ring-chain isomerism is a form of isomerism where the carbon atoms can form either a ring or a chain. This form of isomerism is common in organic compounds.

Functional Isomerism

Functional isomerism is a form of isomerism where the molecular formula remains the same but the functional group changes. This form of isomerism is common in organic compounds.

See Also

• Isomer
• Stereoisomerism
• Organic compound

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