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Constitutional Isomers

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    Constitutional or structural isomers are compounds with the same molecular formula but different structural formulas.

    eg. 1: Butane and isobutane have the same molecular formula, C4H10, but different structural formulas.


    Therefore, butane and isobutane are constitutional isomers.

    eg. 2: Ethyl alcohol and dimethyl ether have the same molecular formula, C2H6O, but different structural formulas.


    Therefore, ethyl alcohol and dimethyl ether are constitutional isomers.

    see also stereoisomers, skeletal isomers, positional isomers, functional isomers

    This page titled Constitutional Isomers is shared under a All Rights Reserved (used with permission) license and was authored, remixed, and/or curated by Gamini Gunawardena via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.

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