The barrier to C-C bond rotation in bromoethane is 15 kJ/mol. What energy can you assign to an H-Br eclipsing interaction? Use strain energy increments from the table below in your calculation. (Specify units, kJ/mol; Calculate to nearest 0.1 energy units) Interaction H→ H eclipsed H→ CH3 eclipsed CH3 CH3 eclipsed CH3 CH3 gauche Cause Torsional strain Mostly torsional strain Torsional and steric strain Steric strain (kJ/mol) Energy cost 4.0 6.0 11.0 3.8 (kcal/mol) 1.0 1.4 2.6 0.9

The barrier to C-C bond rotation in bromoethane is 15 kJ/mol. What energy can you assign to an H-Br eclipsing interaction? Use strain energy increments from the table below in your calculation. (Specify units, kJ/mol; Calculate to nearest 0.1 energy units) Interaction H→ H eclipsed H→ CH3 eclipsed CH3 CH3 eclipsed CH3 CH3 gauche Cause Torsional strain Mostly torsional strain Torsional and steric strain Steric strain (kJ/mol) Energy cost 4.0 6.0 11.0 3.8 (kcal/mol) 1.0 1.4 2.6 0.9

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter7: Cycloalkanes

Section: Chapter Questions

Problem 15E

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