4. For the structure shown below, Part A) Draw the Newman projections and 3-D sawhorse structures corresponding to the lowest and highest energy conformations for rotation around the C2-C3 bond. Draw the Newman projections looking FROM THE C2 CARBON TO THE C3 CARBON (i.e. with the C2 carbon in the "front"). Part B) Determine the energy difference between the lowest and highest conformations, and be sure to clearly show each energy contribution that you are including in your calculation. Lowest Energy Conformation 3-D sawhorse Newman ECLIPSING Interactions Energy Difference: AB Energy kcal/mol H/H 1.0 H/Me 1.4 H/Et 1.5 H/H-Pr 1.6 H/1-Bu 3.0 Me / Me 2.6 Me/Et 2.7 Me/Pr 3.0 GAUCHE A. Interactions Energy kcal/mol Me / Me 0.9 Me / Et 0.95 Me / -Pr 1.1 Melt-Bu 2.7 Et/Et 1.1 Et/i-Pr 1.6 Et/1-Bu 3.0 +-Pr/Pr 2.0 Highest Energy Conformation 3-D sawhorse Newman

4. For the structure shown below, Part A) Draw the Newman projections and 3-D sawhorse structures corresponding to the lowest and highest energy conformations for rotation around the C2-C3 bond. Draw the Newman projections looking FROM THE C2 CARBON TO THE C3 CARBON (i.e. with the C2 carbon in the "front"). Part B) Determine the energy difference between the lowest and highest conformations, and be sure to clearly show each energy contribution that you are including in your calculation. Lowest Energy Conformation 3-D sawhorse Newman ECLIPSING Interactions Energy Difference: AB Energy kcal/mol H/H 1.0 H/Me 1.4 H/Et 1.5 H/H-Pr 1.6 H/1-Bu 3.0 Me / Me 2.6 Me/Et 2.7 Me/Pr 3.0 GAUCHE A. Interactions Energy kcal/mol Me / Me 0.9 Me / Et 0.95 Me / -Pr 1.1 Melt-Bu 2.7 Et/Et 1.1 Et/i-Pr 1.6 Et/1-Bu 3.0 +-Pr/Pr 2.0 Highest Energy Conformation 3-D sawhorse Newman

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question.2 Follow the directions given to convert each Newman projection into a second Newman projection and label it. Which of these Newman projections shows the most stable conformation of ethane looking down the Cl-C2 bond? Retate frent C 40'cleckwie H. H. Eclipsed Note: make the proper rotation, name the result confirmation and show which one is more stable and why?
Draw as many resonance structures as you can for the following carbonation. Label all of the carbonation structures as 1,2,3 (primary,secondary,tertiary) and circle the most stable conformation in terms of the carbonation.
Starting from the Newman projection below, rotate the back carbon to provide the structure in a gauge staggered conformation.
cyclohexane chair and boat conformation
Using the cyclohexane with the C's numbered as shown, draw a chair form that fits each description. a.) The ring has an axial CH3 group at C1 and an equatorial OH on C2.b.) The ring has an equatorial CH3 group on C6 and an axial OH group on C4.c.) The ring has equatorial OH groups on C1, C2, and C5.
b
Draw both a chair confirmation of the substitutes cyclohexane drawn below. Be certain to actually do a ring flip. Also be certain to very clearly distinguish axial from equatorial positions. Then circle the more stable conformation.
Give answer to all parts otherwise i will give you downward
Complete the question on paper and snap a photo and upload it as your submission in jpg or pdf format. CI IO H OH a. Generate a Newman projection of the molecule shown above. The red arrow indicated the direction from which your eyes are looking at the molecule. b. Also draw a Newman projection of a conformation that is less stable than the one that you have draw in a. There may be more than one correct option to generate a less stable Newman projection - you need only generate one. You can rotate around the C-C single bond to go between eclipsed and/or staggered conformations. c. Describe why the conformation in b. is less stable than a (name the interactions that make the conformation less stable). Point out where on your structure those interactions are (circling is fine).
Paraphrasing ewriting Tool Car note Pirate Ship BLACKBOARD wos 6Baun paumn [Review Topics) [References) Use the References to access important values needed for this question. a. Use strain energy increments in the OWL Table Reference (see References button, Strain Energy Increments) to calculate the energy difference between the two chair conformations of the compound below. b. Specify substituent positions (axial or equatorial) in the more stable chair. c. Estimate the percent of the more stable chair at equilibrium at 25°C. (To determine the percent of the more stable chair at equilibrium, first calculate Ke and then use this value to find the percentage.) OH (in isopropanol) Answers: a. The energy difference is b. In the more stable chair: kJ/mol. o The methyl group is in the o The hydroxyl group is in the e position. 8 position. c. At 25°C the equilibrium percent of the more stable chair conformation is approximately Submit Answer Retry Entire Group 9 more group attempts remaining…
just problem 5.26 please