For the 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. 2,3-dimethylpentane
For the 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. 2,3-dimethylpentane
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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![For the 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.
2,3-dimethylpentane
ECLIPSING
Interactions
AB
Energy
kcal/mol
H/H
1.0
H / Me
1.4
H/Et 1.5
H/i-Pr 1.6
H/t-Bu 3.0
Me / Me 2.6
Me / Et
2.7
Me/i-Pr 3.0
GAUCHE A.
Interactions
Me / Me
Me / Et
Me / i-Pr
Me / t-Bu
Et / Et
Et / -Pr
Et/t-Bu
i-Pr/i-Pr
B
Energy
kcal/mol
0.9
0.95
1.1
2.7
1.1
1.6
3.0
2.0](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd28bb5a8-7114-481e-95e9-134d2c6aa143%2Fb7b51aec-dfd7-4a54-af9e-e675fffa3091%2Fo7xfl4_processed.jpeg&w=3840&q=75)
Transcribed Image Text:For the 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.
2,3-dimethylpentane
ECLIPSING
Interactions
AB
Energy
kcal/mol
H/H
1.0
H / Me
1.4
H/Et 1.5
H/i-Pr 1.6
H/t-Bu 3.0
Me / Me 2.6
Me / Et
2.7
Me/i-Pr 3.0
GAUCHE A.
Interactions
Me / Me
Me / Et
Me / i-Pr
Me / t-Bu
Et / Et
Et / -Pr
Et/t-Bu
i-Pr/i-Pr
B
Energy
kcal/mol
0.9
0.95
1.1
2.7
1.1
1.6
3.0
2.0
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