Energy cost Interaction HH eclipsed H CH3 eclipsed Cause Torsional strain (kJ/mol) (kcal/mol) 4.0 1.0 Mostly torsional strain 6.0 1.4 CH3 → CH3 eclipsed Torsional and steric strain 11.0 2.6 CH3 CH3 gauche Steric strain 3.8 0.9 Draw all the newman projections of 2-methylbutane rotated about the C2-C3 bond. What is the difference in energy between the most stable and least stable conformers in kj/mol?

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
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Energy cost
Interaction
HH eclipsed
H CH3 eclipsed
Cause
Torsional strain
(kJ/mol)
(kcal/mol)
4.0
1.0
Mostly torsional strain
6.0
1.4
CH3
→ CH3 eclipsed
Torsional and steric strain
11.0
2.6
CH3 CH3 gauche
Steric strain
3.8
0.9
Draw all the newman projections of 2-methylbutane rotated about the C2-C3
bond. What is the difference in energy between the most stable and least
stable conformers in kj/mol?
Transcribed Image Text:Energy cost Interaction HH eclipsed H CH3 eclipsed Cause Torsional strain (kJ/mol) (kcal/mol) 4.0 1.0 Mostly torsional strain 6.0 1.4 CH3 → CH3 eclipsed Torsional and steric strain 11.0 2.6 CH3 CH3 gauche Steric strain 3.8 0.9 Draw all the newman projections of 2-methylbutane rotated about the C2-C3 bond. What is the difference in energy between the most stable and least stable conformers in kj/mol?
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