QUESTION 21 Consider 2,2,3-trimethylbuttane. Using a Newman projection formula, draw the most stable conformation, sighting along the C2-C3 bond. Compute the total strain energy for this conformation. Refe strain energy values given below. Strain energies with respect to atoms/groups bonded to C-C (one atom/group bonded to each C) H <-> H eclipsed: 4 kJ/mol CH3 <-> H eclipsed: 6 kJ/mol CH3 <-> CH3 eclipsed: 11 kJ/mol CH3 <---> CH3 gauche staggered: 3.8 kJ/mol A. 11.4 kJ/mol. B. 15.2 kJ/mol c.7.6 kJ/mol D. 3.8 kJ/mol

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QUESTION 21
Consider 2,2,3-trimethylbuttane. Using a Newman projection formula, draw the most stable conformation, sighting along the C2-C3 bond. Compute the total strain energy for this conformation. Refe
strain energy values given below.
Strain energies with respect to atoms/groups bonded to C-C (one atom/group bonded to each C)
H <---> H eclipsed: 4 kJ/mol
CH3 <---> H eclipsed: 6 kJ/mol
CH3 <----> CH3 eclipsed: 11 kJ/mol
CH3 <----> CH3 gauche staggered: 3.8 kJ/mol
OA. 11.4 kJ/mol
B. 15.2 kJ/mol
OC. 7.6 kJ/mol
OD. 3.8 kJ/mol
Transcribed Image Text:QUESTION 21 Consider 2,2,3-trimethylbuttane. Using a Newman projection formula, draw the most stable conformation, sighting along the C2-C3 bond. Compute the total strain energy for this conformation. Refe strain energy values given below. Strain energies with respect to atoms/groups bonded to C-C (one atom/group bonded to each C) H <---> H eclipsed: 4 kJ/mol CH3 <---> H eclipsed: 6 kJ/mol CH3 <----> CH3 eclipsed: 11 kJ/mol CH3 <----> CH3 gauche staggered: 3.8 kJ/mol OA. 11.4 kJ/mol B. 15.2 kJ/mol OC. 7.6 kJ/mol OD. 3.8 kJ/mol
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