Question #5: Conformations of trans- and cis-1,4-dimethylcyclohexane A. Using your molecular modeling kit, construct trans-1,4-dimethylcyclohexane. In...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Question #5: Conformations of trans- and cis-1,4-dimethylcyclohexane A. Using your molecular modeling kit, construct trans-1,4-dimethylcyclohexane. In the space below, draw one of the chair conformations. Label the methyl groups as either axial (a) or equatorial (e). Number the carbons of the cyclohexane ring, perform a chair flip and draw the new chair conformation. B. Construct trans-1,4-dimethylcyclohexane in Avogadro using the steps listed. In Avogadro, construct cyclohexane. Optimize the geometry so that the ring is in the chair conformation. It may take a few attempts to obtain the chair cyclohexane. Place a methyl group in the axial position on carbon-1 of the ring. Next, place a methyl group on carbon-4 of the ring, making sure that the trans conformation is represented. Is this group axial or equatorial? Calculate the energy of the compound and record the value in the table. Delete the methyl groups, and optimize the cyclohexane again. Now place a methyl group in an equatorial position on carbon-1 of the ring. Place a second methyl group on carbon-4 of the ring, making sure the trans conformation is represented. Optimize the geometry and calculate the energy of the compound. Record the energy of this trans conformation in the table. Which chair is higher in energy? Carbon-1 methyl position Carbon-4 methyl position axial equatorial C. Using your molecular modeling kit, construct cis-1,4-dimethylcyclohexane. In the space below, draw one of the chair conformations. Label the methyl groups as either axial (a) or equatorial (e). Number the carbons of the cyclohexane ring, perform a chair flip and draw the new chair conformation. D. Using Avogadro, construct cis-1,4-methylcyclohexane In Avogadro, construct cyclohexane. Optimize the geometry so that the ring is in the chair conformation. It may take a few attempts to obtain the chair cyclohexane Place a methyl group in the axial position on carbon-1 of the ring. Next, place a methyl group on carbon-4 of the ring, making sure that the cis conformation is represented. Calculate the energy of the compound and record the value in the table. Delete the methyl groups, and optimize the cyclohexane again. Energy (kJ/mol) Now place a methyl group in an equatorial position on carbon-1 of the ring. Place a second methyl group on carbon-4 of the ring, making sure the cis conformation is represented. Optimize the geometry and calculate the energy of the compound. Record the energy of this trans conformation in the table. Which chair is higher in energy? Carbon-1 methyl position axial equatorial Carbon-4 methyl position 53 Energy (kJ/mol) E. Of all the chair conformations from question #5, which is the lowest in potential energy? Which is more stable, the cis or the trans isomer? Explain. Question #5: Conformations of trans- and cis-1,4-dimethylcyclohexane A. Using your molecular modeling kit, construct trans-1,4-dimethylcyclohexane. In the space below, draw one of the chair conformations. Label the methyl groups as either axial (a) or equatorial (e). Number the carbons of the cyclohexane ring, perform a chair flip and draw the new chair conformation. B. Construct trans-1,4-dimethylcyclohexane in Avogadro using the steps listed. In Avogadro, construct cyclohexane. Optimize the geometry so that the ring is in the chair conformation. It may take a few attempts to obtain the chair cyclohexane. Place a methyl group in the axial position on carbon-1 of the ring. Next, place a methyl group on carbon-4 of the ring, making sure that the trans conformation is represented. Is this group axial or equatorial? Calculate the energy of the compound and record the value in the table. Delete the methyl groups, and optimize the cyclohexane again. Now place a methyl group in an equatorial position on carbon-1 of the ring. Place a second methyl group on carbon-4 of the ring, making sure the trans conformation is represented. Optimize the geometry and calculate the energy of the compound. Record the energy of this trans conformation in the table. Which chair is higher in energy? Carbon-1 methyl position Carbon-4 methyl position axial equatorial C. Using your molecular modeling kit, construct cis-1,4-dimethylcyclohexane. In the space below, draw one of the chair conformations. Label the methyl groups as either axial (a) or equatorial (e). Number the carbons of the cyclohexane ring, perform a chair flip and draw the new chair conformation. D. Using Avogadro, construct cis-1,4-methylcyclohexane In Avogadro, construct cyclohexane. Optimize the geometry so that the ring is in the chair conformation. It may take a few attempts to obtain the chair cyclohexane Place a methyl group in the axial position on carbon-1 of the ring. Next, place a methyl group on carbon-4 of the ring, making sure that the cis conformation is represented. Calculate the energy of the compound and record the value in the table. Delete the methyl groups, and optimize the cyclohexane again. Energy (kJ/mol) Now place a methyl group in an equatorial position on carbon-1 of the ring. Place a second methyl group on carbon-4 of the ring, making sure the cis conformation is represented. Optimize the geometry and calculate the energy of the compound. Record the energy of this trans conformation in the table. Which chair is higher in energy? Carbon-1 methyl position axial equatorial Carbon-4 methyl position 53 Energy (kJ/mol) E. Of all the chair conformations from question #5, which is the lowest in potential energy? Which is more stable, the cis or the trans isomer? Explain.
Expert Answer:
Answer rating: 100% (QA)
Trans14dimethylcyclohexane refers to a cyclohexane molecule with two methyl groups CH3 attached to carbons 1 and 4 in a trans configuration In the cha... View the full answer
Related Book For
Posted Date:
Students also viewed these accounting questions
-
Draw 1,2,3,4,5,6-hexamethylcyclohexane with a. All the methyl groups in axial positions b. All the methyl groups in equatorial positions
-
Draw the two chair conformations of the sugar α-(+)-glucopyranose, one form of the sugar glucose. Which of these two forms is the major one at equilibrium? Explain. CH2OH OH ...
-
Draw and label the E and Z conformations of the amino acid derivative N-acetylproline. HCC-N N-acetylproline
-
Write a Fortran program that creates an integer array with values -123, -4, 5, 67, 890, and 12345. Prints out the array in several formatted ways. a. Print each element, on its own line, using a...
-
Separate and assign the following activities to employee A, B and C to accomplish the best control. Explain why. a. Assemble supporting documents for cash disbursements b. Maintain custody of the...
-
Discuss how the statistical procedures control technique will be used as a means to assign participants to each group. Discuss the rationale for this technique. Develop a hypothetical research...
-
The file colleges contains the following data for the sample of 102 private colleges: year founded, tuition and fees (not including room and board), and the percentage of undergraduates who obtained...
-
Estimate the vapor pressure of acetone (mm Hg) at 50C (a) From data in Perrys Chemical Engineers Handbook and the ClausiusClapeyron equation, (b) From the Cox chart (Figure 6.1-4), and (c) From the...
-
1. For each of the product strategies: First-to-market, Follow-the-leader, Me-too, and Application engineering, identify the characteristics of each and discuss how concurrent engineering fits or...
-
The following tables show the domestic supply and demand schedules for bushels of flaxseed (used as an edible oil and a nutrition supplement) in the United States and Kazakhstan, with prices measured...
-
Matt inherited a fifteen-year annuity with annual payments as a trust. He has been told that annuity payments earn interest compounded at a fixed rate and that, at the end of fifteen years, their...
-
A truss is loaded as shown below. E = 20 x 109 Pa, A = 0.005 m for all members. Y 2m 3m 10 KN 15 KN 2 5m 2 3 3m X The member stiffness matrices in the global coordinate system, kg, are obtained based...
-
1. What is the difference between cash accounting and accrual accounting? 2. Explain the concept of depreciation and how it is calculated. 3. What is the purpose of the trial balance in accounting?...
-
-x +1 x - 2x-3 Let f (x) = x4 4x 2x + 12x +9, g(x) = x - 2x -3 and (x) = - Part A: Use complete sentences to compare the domain and range of the polynomial function f (x) to that of the radical...
-
If the bodies of Laci Peterson and Conner had not washed up from the bay, would the prosecution still have been able to charge Peterson?
-
An accountant and a bookkeeper, as part of a contract dissolving their accounting business, agreed that each would contribute $100,000 to fund an annuity for a clerk who was a longtime employee of...
-
Your internet bill is $128. You are charged 12% simple interest for late payments. How much simple interest is due if you pay the bill 3 months past the due date? (Round your answer to two decimal...
-
Using the information presented in Problem 13.4B, prepare a partial statement of cash flows for the current year, showing the computation of net cash flows from operating activities using the...
-
Given that squaric acid behaves like a dicarboxylic acid, draw structures for the products formed when it reacts with excess SOCl2; with ethanol solvent in the presence of an acid catalyst.
-
When N - acetyl- L -aspartic acid is treated with acetic anhydride, an optically active compound A, C6H7NO4, is formed" Tleaffient of A with the amino acid L -alanine yields two separable, isomeric...
-
Answer Problem 8.33 for all alcohols with the forrnula C4H9OH. (a) Give the structures of all alcohols with the molecular formula C5H13OH. (b) Which of the compounds in part (a) are chiral? (c) Name...
-
Following is a list of information for Peter and Amy Jones for the current tax year. Peter and Amy are married and have three children, Aubrynne, Bryson, and Caden. They live at 100 Main Street,...
-
Kelly and Chanelle Chambers, ages 47 and 45, are married and live at 584 Thoreau Drive, Boston, MA 59483. Kellys Social Security number is 111-11-1111 and Chanelles is 222-22-2222. The Chambers have...
-
The amplitude of a surface wave for which \(\lambda=0.050 \mathrm{~m}\) is \(5.0 \mathrm{~mm}\) at a distance of \(1.0 \mathrm{~m}\) from a point source. What is the amplitude of the wave (a) 10 m...
Study smarter with the SolutionInn App