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Chapter 4: Q.46. (page 128)

Question: Considering rotation around the bond highlighted in pink in each compound, draw Newman projections for the most stable and least stable conformations.

a.

b.

Short Answer

Expert verified

Answer

a.

b.

Step by step solution

01

Conformation

The conformation is the molecule's structure, which is obtained by the rotation of the single bond in the molecules.

02

Eclipsed conformation

The eclipsed conformation is obtained when the two substituents on the two corresponding carbon atoms have zero-degree angles or overlap.

The eclipsed conformation is always higher in energy compared to the staggered conformation.

03

Staggered conformation

The staggered conformation is obtained when the two substituents on the two corresponding carbon atoms have a600 angle.

04

Explanation

a.

The Newman projection of the given molecule is shown as:

Newman projection

b.

The Newman projection of the given molecule is shown as:

Newman projection

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Most popular questions from this chapter

Question: Which conformation in each pair is higher in energy? Calculate the energy difference between the two conformations using the values given in Table 4.3.

a.

b.

Question: Explain why beeswax is insoluble in H2O, slightly soluble in ethanol (CH3CH2OH), and soluble in chloroform role="math" localid="1648544714807" (CHCl3).

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: Arrange the following compounds in order of increasing boiling point.

Question: Give the IUPAC name for each compound.
See all solutions

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