Organic Chemistry
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(i) Determine the percentage of the twist-boat conformers present in a sample of deuterated cyclohexane at room temperature if the free energy of the most stable chair conformer of deuterated cyclohexane is 23.6 kJ/mol lower than that of the twist-boat conformer.(ii) Does your answer agree with the statement that says there is no more than one twist-boat conformer for every 10,000 chair conformers?
Consider the following:
What is the value for the total strain of the eclipsed conformation?
Assume that the temperature is 298 K. Consider the following bond rotation and use the given table to answer the questions below:
(a) Which conformation is more stable?
(b) Determine the ΔG° for the process.
(c) Determine the equilibrium constant (Keq).
(d) Provide the transition state for the process.
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?
Determine the total strain value of the eclipsed conformation.
Does the following graph correctly represent the torsional energy of 2-methylpentane along the C3-C4 bond? (Note: C4 is in the black, represented by a circle with three bonds extending from it, while C3 is in the front, represented by three bonds forming a Y shape. The angle between the isopropyl group on the front carbon and the methyl group on the back carbon is referred to as the dihedral angle.)