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Consider 2-methylbutane. Sighting along the C2-C3 bond: (a) Draw the Newman Projections of the most stable...

Consider 2-methylbutane. Sighting along the C2-C3 bond:

(a) Draw the Newman Projections of the most stable conformation.

(b) Draw the Newman Projection of the least stable conformation.

(c) If CH3<->CH3 eclipsing interaction cost 11kJ/mol and a CH3<->CH3 gauche interaction cost 3.8kJ/mol make a quantitative plot of energy verse rotation about the C2-C3 bond.

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