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Chapter 4: Q.39. (page 128)

Question: Give the structure and IUPAC name for each of the nine isomers having molecular formula C9H20that contains seven carbons in the longest chain and two methyl groups as substituents.

Short Answer

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Answer

Step by step solution

01

Isomers

Isomers are shown by the same molecular formula but different structural representations.

02

IUPAC naming

The IUPAC naming of the compound follows the longest chain of carbons. The counting is started from the side where the substituents are the closest. Moreover, the alphabetical order is followed for the naming.

03

Explanation

The nine isomers of C9H20 with seven carbon chains is shown as follows:

Nine isomers of C9H20

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Most popular questions from this chapter

Question: Convert each of the following structures into its more stable chair form. One structure represents menthol and one represents isomenthol. Menthol, the more stable isomer, is used in lip balms and mouthwash. Which structure corresponds to menthol?

Question: Draw the two possible chair conformations for cis-1,3-dimethylcyclohexane. Which conformation, if either, is more stable?

Question: Consider rotation around the carbon-carbon bond in 1,2-dichloroethane (ClCH2CH2Cl).

a.Using Newman projections, draw all of the staggered and eclipsed conformations that result from rotation around this bond.

b. Graph energy versus dihedral angle for rotation around this bond.

Question: Calculate the destabilization present in each eclipsed conformation.

a.

b.

Question: Draw a second chair conformation for each cyclohexane. Then decide which conformation is present in higher concentration at equilibrium.

a.

b.

c.
See all solutions

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