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Chapter 4: Q.14. (page 128)

Question: Draw the staggered and eclipsed conformations that result from rotation around the C-C bond in CH3-CH2Br.

Short Answer

Expert verified

Answer

The staggered and eclipsed conformations are shown below:

Step by step solution

01

Newman projection

In the Newman projection, the dot represents the front carbon whereas the circle represents the back carbon.

02

Staggered conformation

In the staggered conformation, the dihedral angle between the atom of the front carbon and the atom of the back carbon is 600 . The staggered conformation is shown below:

Staggered conformation

03

Eclipsed conformation

In the eclipsed conformation, the dihedral angle between the atom of the front carbon and the atom of the back carbon is 00. The eclipsed conformation is shown below:

Eclipsed conformation

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Most popular questions from this chapter

Give the structure corresponding to each IUPAC name.

a. 1,2-dimethylcyclobutane

b. 1,1,2-trimethylcyclopropane

c. 4-ethyl-1,2-dimethylcyclohexane

d. 1-sec-butyl-3-isopropylcyclopentane

e. 1,1,2,3,4-pentamethylcycloheptane

Question: Review classifying carbons and hydrogens in Section 3.2, and draw the structure of an alkane with molecular formula C7H16 that contains

a. one 40carbon;

b. only 10 and 20 carbons;

c.10 , 20, and 30 hydrogens.

Question: Mineral oil, a mixture of high molecular weight alkanes, is sometimes used as a laxative. Why are individuals who use mineral oil for this purpose advised to avoid taking it at the same time they consume foods rich in fat-soluble vitamins such as vitamin A?

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

Question: Give the structure corresponding to each IUPAC name.

  1. 3-methylhexane
  2. 3,3-dimethylpentane
  3. 3,5,5-trimethyloctane
  4. 3-ethyl-4-methylhexane
  5. 3-ethyl-5-isobutylnonane
See all solutions

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