Sketch a curve similar to that in Fig. 4.8 showing in general terms the energy changes that arise from rotation about the C2-C3 bond of 2-methylbutane. You need not concern yourself with the actual numerical values of the energy changes, but you should label all maxima and minima with the appropriate conformations.
In Figure 4.8

Transcribed Image Text:

H3C CH H CH3 НСНЗ Eclipsed IV CH3 Eclipsed II Eclipsed V 19 kJ molH1 16 kJ mo 16 kJ mob 3.8 kJ mol- 3.8 kJ mol CH3 Anti l Gauche IlI Gauche V Anti I 120° 180° 240 Rotation