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Chapter 24: Problem 32

Draw all structural and geometric isomers of butene and name them.

Short Answer

Expert verified
The three isomers of butene are: 1. 1-Butene (Structural isomer) 2. Cis-2-butene (Geometric isomer) 3. Trans-2-butene (Geometric isomer)

Step by step solution

01

Draw the structural isomers of butene

Structural isomers of butene can be achieved by changing the position of the double bond or branching the carbon chain. We have two possible structural isomers: 1. Double bond between the first and second carbon atoms (1-butene) 2. Double bond between the second and third carbon atoms (2-butene). This isomer has a geometric isomerism. Now let's determine the geometric isomers for 2-butene.
02

Draw the geometric isomers for 2-butene

Geometric isomers can be formed when there is a restriction in bond rotation, like a double bond. In this case, the geometric isomers have different configurations around the double bond. They can be classified as cis-isomer or trans-isomer depending on the position of the two largest substituents. 1. Cis-2-butene: Both the largest substituents (methyl groups) are on the same side of the double bond. 2. Trans-2-butene: Both the largest substituents (methyl groups) are on the opposite sides of the double bond. So, in total, we have three isomers of butene: 1. 1-Butene (Structural isomer) 2. Cis-2-butene (Geometric isomer) 3. Trans-2-butene (Geometric isomer)

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Most popular questions from this chapter

Indicate whether each statement is true or false. (a) Ethane has a higher molar mass than ethene. (b) For molecules of the same homologous family, the higher the molecular mass, the higher the boiling point. (c) The local geometry around the alkene group is T-shaped. (d) Butene has two structural isomers.

Draw the two possible heterodimeric dipeptides formed by condensation reactions between glycine and alanine.

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