Organic Chemistry
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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.
Determine the total strain value of the eclipsed conformation.
Determine the energy difference (in kJ/mol) between the most stable eclipsed conformer and the most stable staggered conformer for 1,2-dibromoethane.
Note: A gauche conformer has two energy barriers, 22.6 kJ/mol and 39.7 kJ/mol. The anti conformer is 5.86 kJ/mol more stable than the gauche conformer.
Starting with the least stable conformer, draw an appropriate potential energy diagram for rotation about the C−C bond of 1,2-dibromoethane through 360º if a gauche conformer of 1,2-dibromoethane has two energy barriers, 5.4 kcal/mol and 9.5 kcal/mol, and the anti conformer is more stable than a gauche conformer by 1.4 kcal/mol.