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 Keg and then use this value to find the percentage.) CH3 H3C OH Answers: a. The energy difference is b. In the more stable chair: kJ/mol. v position. • The isopropyl group is in the| • The carboxyl group is in the position. c. At 25°C the equilibrium percent of the more stable chair conformation is approximately

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 Keg and then use this value to find the percentage.) CH3 H3C OH Answers: a. The energy difference is b. In the more stable chair: kJ/mol. v position. • The isopropyl group is in the| • The carboxyl group is in the position. c. At 25°C the equilibrium percent of the more stable chair conformation is approximately

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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Similar questions

Consider the structure of trans-1-ethyl-3-methylcyclohexane. Which statement is fully correct about the most stable chair conformation? A. both groups are in equatorial. B. both groups are in axial. C. methyl group in axial and ethyl group in equatorial. D. methyl group in equatorial and ethyl group in axial.
A. Using your molecular modeling kit, construct cyclohexane. In the space below, draw the chair and boat conformations. In the chair conformation, draw all hydrogens and label as either axial (a) or equatorial (e). In the boat conformation, label only the flagpole hydrogens.
Which of the statements below correctly describes the chair conformations of trans-1,4-dimethylcyclohexane? The two chair conformations are of equal energy. O b. The higher energy chair conformation contains two axial methyl groups. O c. The lower energy chair conformation contains one axial methyl group and one equatorial methyl group. Od. The higher energy chair conformation contains two equatorial methyl groups.
1. 2. Draw both chair conformations of the structures below. Draw all hydrogen atoms. Circle the most stable conformation. H3C.,, H3C CH3 CH3
Consider cis-1,2-dibromocyclohexane and trans-1,2-dibromocyclohexane. anleune Draw these two compounds in wedge-dash representation. a. b. Which compound is considered to be meso? C. Which is chiral? mer d. Provide the structure for the (S, S) isomer of your answer to part c. in two its two chair conformations and circle the more stable conformational isomer.
a) Draw two chair conformations and label the most stable conformation. For consistency between assignments, use the diagrams given. You may redraw but keep the orientation the same; otherwise, it becomes difficult for students to mark! I have added the Br to carbon 1 for the first chair conformation as a start. b) What is the dihedral angle between the chlorine atom and the methyl group in the most stable chair conformation. total for for correct drawing correct drawing for Br correct angle Br dihedral 1 angle = CI" 4 CH3 H *** : for identifying most stable
Please draw the two most stable conformations (chair conformatoin I beleive) and label the most stable one if possible.
6. a. Draw both chair conformations for trans-1,2-dichlorocyclohexane. Label all unfavorable interactions. b. In 1,2-disubstituted cyclohexanes, the substituents interact not just with the ring itself, but also with each other. Draw Newman projections to explain where that interaction occurs in the chairs from part a.
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