Structural Isomers Compounds that have the same molecular formula, but different structural formula (arrangement of atoms), are called structural isomers.

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Presentation transcript:

Structural Isomers Compounds that have the same molecular formula, but different structural formula (arrangement of atoms), are called structural isomers have different properties, such as b.p., m.p., and reactivity

Examples of Isomers CH3 The formula C4H10 has two different structures CH3CH2CH2CH3 CH3CHCH3 Butane 2-methylpropane When a CH3 is is used to form a branch, it makes a new isomer of C4H10.

Learning Check Write the structural formulas of 3 isomers that have the formula C5H12. Name each.

Solution CH3CH2CH2CH2CH3 pentane CH3CHCH2CH3 2-methylbutane CH3CCH3 2,2-dimethylpropane