Organic Chemistry
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Write a perspective representation that corresponds to the lowest-energy conformation (or the most stable conformation) of the following compound.2-methylhexane
Observe the molecular orbital picture of ethyne. In contrast to ethane, there is no free rotation around the triple bond of ethyne. Explain.
Compared to butane and other alkanes, there is no free rotation around any C-C bonds in cyclobutane. Provide a brief explanation.
(i) Excluding the C3−C4 bond of 2,5-dimethylhexane, about which other C−C bonds can rotation take place?
(ii) Determine the number of the C−C bonds in 2,5-dimethylhexane that have equally stable staggered conformers.
Even though free rotation is generally observed around most σ bonds, the C–N bond in an amide demonstrates restricted rotation, as depicted below. Which of the following factors primarily accounts for this behavior?