To draw aNewman projection,we will imagineviewingthe moleculefrom one carbon to the next carbonatom directly along a selected C–C bond, as shown below, and follow the rules:
Figure 4.1d Viewing of the molecule
The front carbon atom is shown as a point with three other bonds:
The rear carbon atom is shown as a circle with three other bonds:
Put the two carbons together to get the Newman projection of the staggered conformation:
From the staggered conformation, fix the front carbon in place, and rotate the rear carbon by 60° to get the eclipsed conformation: