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Increased substitution around a bond leads to increased
Chapter 3, Problem 3(choose chapter or problem)
Increased substitution around a bond leads to increased strain. Take the four substituted butanes listed below, for example. For each compound, sight along the \(\mathrm{C2-C3}\) bond and draw Newman projections of the most stable and least stable conformations. Use the data in Table 3-5 to assign strain-energy values to each conformation. Which of the eight conformations is most strained? Which is least strained?
(a) 2-Methylbutane
(b) 2,2-Dimethylbutane
(c) 2,3-Dimethylbutane
(d) 2,2,3-Trimethylbutane
Equation Transcription:
Text Transcription:
C2-C3
Questions & Answers
QUESTION:
Increased substitution around a bond leads to increased strain. Take the four substituted butanes listed below, for example. For each compound, sight along the \(\mathrm{C2-C3}\) bond and draw Newman projections of the most stable and least stable conformations. Use the data in Table 3-5 to assign strain-energy values to each conformation. Which of the eight conformations is most strained? Which is least strained?
(a) 2-Methylbutane
(b) 2,2-Dimethylbutane
(c) 2,3-Dimethylbutane
(d) 2,2,3-Trimethylbutane
Equation Transcription:
Text Transcription:
C2-C3
ANSWER:
Step 1 of 9
According to the Newman projection, which has minimum repulsion between the atoms is the most stable conformation and which has maximum repulsion between the atoms is the least stable conformation. So staggered conformation is the most stable conformation, and eclipsed conformation is the least stable conformation.