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The rotational energy barrier in K cal mol−1 between the most stable and the least stable conformations of 2,3- dimethylbutane along C2−C3 bond is : (Given : Energies K cal mol−1 for H/CH3 eclipsing = 1.8, CH3/CH3 eclipsing = 3.9, CH3/CH3 gauche = 0.9. Torsional strain of H/H eclipsing is neglected.) |
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Answer» The rotational energy barrier in K cal mol−1 between the most stable and the least stable conformations of 2,3- dimethylbutane along C2−C3 bond is : (Given : Energies K cal mol−1 for H/CH3 eclipsing = 1.8, CH3/CH3 eclipsing = 3.9, CH3/CH3 gauche = 0.9. Torsional strain of H/H eclipsing is neglected.) |
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