Weblink 15.3 HOMO for the EtBr/ OH^- interaction, with OH^- acting as a base

The arrangement of atoms shown here corresponds to the transition state for an E2 elimination. The MO shows how a π interaction is beginning to form between the two carbons. Note that the OH and Br are trans co-planar.

• Click and drag to rotate the structure; hold down shift, then click and drag to zoom.
• Select the type of surface using the radio buttons.
• Use the check box to display the nodal surface (zero contour - shown as a green mesh).
• Use the buttons to change the iso-surface value.