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  Weblink 13.5 The HOMO and LUMO of isobutene

The HOMO is a p bonding MO to which the 2p AO from the terminal CH2 carbon makes a slightly larger contribution. FOr the LUMO, it is the AO from the other carbon which makes the larger contribution.

  • Click and drag to rotate the structure; shift_click and drag to zoom
  • Select the MO to view using the menu
  • 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