ETEXT+MASTERINGCHEMISTRY STANDALONE AC
7th Edition
ISBN: 9781269736947
Author: Bruice
Publisher: PEARSON
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Chapter 3.14, Problem 49P
For each of the following disubstituted cyclohexanes, indicate whether the substituents in the two chair conformers are both equatorial in one chair conformer and both axial in the other or one equatorial and one axial in each of the chair conformers:
- a. cis-1,2-
- b. trans-1,2-
- c. cis-1,3-
- d. trans-1,3-
- e. cis-1,4-
- f. trans-1,4-
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Consider the substituted cyclohexane shown in the ball-and-stick model.a.Label the substituents on C1, C2, and C4 as axial or equatorial.
b. Are the substituents on C1 and C2 cis or trans to each other?
c.Are the substituents on C2 and C4 cis or trans to each other?
d.Draw the second possible conformation in the chair form, and classify it as more stable or less stable than the conformation shown in the three-dimensional model.
Consider the substituted cyclohexane shown in the ball-and-stick model.a. Label the substituents on C1, C2, and C4 as axial or equatorial.b. Are the substituents on C1 and C2 cis or trans to each other?c. Are the substituents on C2 and C4 cis or trans to each other?d. Draw the second possible conformation in the chair form, and classify it as more stable or less stable than the conformation shown in the three-dimensional model.
Consider 1-bromopropane, CH3CH2CH2Br.
(a) Draw a Newman projection for the conformation in which CH3 and -Br are anti (dihedral angle 180°).
(b) Draw Newman projections for the conformations in which - CH3 and -Br are gauche (dihedral angles 60° and 300°).
(c) Which of these is the lowest energy conformation?
(d) Which of these conformations, if any, are related by reflection?
Chapter 3 Solutions
ETEXT+MASTERINGCHEMISTRY STANDALONE AC
Ch. 3.1 - Name each of the following:Ch. 3.1 - Draw the structure of a compound with molecular...Ch. 3.1 - Draw the structures and name the four...Ch. 3.1 - Prob. 6PCh. 3.1 - Draw the structure for each of the following: a....Ch. 3.1 - Name the following compounds: a. CH3OCH2CH3 b....Ch. 3.2 - Prob. 11PCh. 3.2 - Prob. 12PCh. 3.3 - Prob. 13PCh. 3.3 - Prob. 14P
Ch. 3.3 - Prob. 15PCh. 3.3 - Prob. 16PCh. 3.3 - What is each compounds systematic name?Ch. 3.4 - Give two names for each of the following alkyl...Ch. 3.4 - Prob. 19PCh. 3.5 - a. What is each ethers systematic name? 1....Ch. 3.6 - Draw the structures of a homologous series of...Ch. 3.6 - Give each of the following a systematic name and...Ch. 3.6 - Prob. 23PCh. 3.6 - Prob. 24PCh. 3.7 - Are the following compounds primary, secondary, or...Ch. 3.7 - Prob. 26PCh. 3.7 - Prob. 27PCh. 3.7 - For each of the following, give the systematic...Ch. 3.8 - Predict the approximate size of the following bond...Ch. 3.9 - Prob. 30PCh. 3.9 - Prob. 31PCh. 3.9 - Prob. 32PCh. 3.9 - Rank the following compounds from highest boiling...Ch. 3.9 - Rank the compounds in each set from highest...Ch. 3.9 - Prob. 35PCh. 3.9 - In which solvent would cyclohexane have the lowest...Ch. 3.10 - a. Draw all the staggered and eclipsed conformers...Ch. 3.10 - Prob. 38PCh. 3.10 - Using Newman projections, draw the most stable...Ch. 3.11 - The bond angles in a regular polygon with n sides...Ch. 3.11 - Prob. 41PCh. 3.11 - Prob. 42PCh. 3.12 - Draw 1,2,3,4,5,6-hexachlorocydohexane with a. all...Ch. 3.13 - The chair conformer of fluorocyclohexane is 0.25...Ch. 3.13 - Using the data in Table 3.9, calculate the...Ch. 3.14 - Prob. 46PCh. 3.14 - Which has a higher percentage of the...Ch. 3.14 - For each of the following disubstituted...Ch. 3.14 - a. Calculate the energy difference between the two...Ch. 3 - a. How many hydrogen does an alkene with 17...Ch. 3 - Draw the structure of octane and isooctaneCh. 3 - Draw a condensed structure and a skeletal...Ch. 3 - Prob. 53PCh. 3 - a. What is each compounds systematic name? b. Draw...Ch. 3 - Which of the following represents a cis isomer?Ch. 3 - a. How many primary carbons does each of the...Ch. 3 - Which of the following conformers of isobutyl...Ch. 3 - Draw a skeletal structure for an alkane that has...Ch. 3 - What is each compounds systematic name? a....Ch. 3 - Which bus a. the higher boiling point:...Ch. 3 - a. Draw Newman projections of the two conformers...Ch. 3 - Ansaid and Motrin belong to the group of drugs...Ch. 3 - Prob. 63PCh. 3 - A student was given the structural formulas of...Ch. 3 - Which of the following conformers has the highest...Ch. 3 - Prob. 66PCh. 3 - Prob. 67PCh. 3 - For rotation about the C-3C-4 bond of...Ch. 3 - Prob. 69PCh. 3 - What is each compounds systematic name? a. b. c....Ch. 3 - Prob. 71PCh. 3 - Why are lower molecular weight alcohols more...Ch. 3 - a. Draw a potential energy diagram for rotation...Ch. 3 - For each of the following compound, determine...Ch. 3 - How many ethers have molecular formula C5H12O?...Ch. 3 - Draw the most stable conformer of the following...Ch. 3 - What is each compounds systematic name?Ch. 3 - Calculate the energy difference between the two...Ch. 3 - The most stable from of glucose (blood sugar) is a...Ch. 3 - Prob. 80PCh. 3 - Explain the following: a. 1-Hexanol has a higher...Ch. 3 - One of the chair conformers of cis-...Ch. 3 - Bromine is a larger atom than chlorine, but the...Ch. 3 - Name the following compounds:Ch. 3 - Prob. 85PCh. 3 - Using the data obtained in Problem 85, calculate...
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- Calculate the energies of the cis-axial and cis-equatorial conformations of cyclohexane-1,3-diol. cis-axial = _____ kcal/mol cis-equatorial = _____ kcal/mol Does the stability of the two conformations match with what you would expect? Why or why not?arrow_forward1. Estimate the relative stabilities of the 4 conformationseclipsed and eclipsed n-pentane by drawing the corresponding Newman projections in descending order according to their stability. Place the most stable or lowest energy on the left. 2. Explain what the difference in energy between the most stable and the least stable is due to. 3. What is the difference in stability between the two staggered conformations?arrow_forwardOn the left is a stereorepresentation of glucose (we discuss the structure and chemistry of glucose in Chapter 25). (a) Convert the stereorepresentation on the left to a planar hexagon representation. (b) Convert the stereorepresentation on the left to a chair conformation. Which substituent groups in the chair conformation are equatorial? Which are axial?arrow_forward
- Following is a chair conformation of cyclohexane with the carbon atoms numbered 1 through 6. (a) Draw hydrogen atoms that are above the plane of the ring on carbons 1 and 2 and below the plane of the ring on carbon 4. (b) Which of these hydrogens are equatorial? Which are axial? (c) Draw the alternative chair conformation. Which hydrogens are equatorial? Which are axial? Which are above the plane of the ring? Which are below it?arrow_forwardDraw a chair conformation of 1,4-dimethylcyclohexane in which one methyl group is equatorial and the other is axial. Draw the alternative chair conformation and calculate the ratio of the two conformations at 25C.arrow_forwardmyo-Inositol, one of the isomers of 1,2,3,4,5,6-hexahydroxycyclohexane, acts as a growth factor in both animals and microorganisms. Draw the most stable chair conformation of myo-inositol.arrow_forward
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