While the above method is a simple method of drawing conjugated p-orbitals, the process which generates these three orbitals is the interaction of the -bonding and -antibonding orbitals of the double bond with the neighboring p-orbital. The process is shown in the figure below. WS-1.21: Using these two-center MOs identified in WS-1.20, draw the four-center orbital correlation diagram for butadiene. (Use the process shown in Fig. 12)