UV absorption in Linear Polyenes

butatdiene orbitals

Click on the graph to display the various bonding and antibonding molecular orbitals and energies. Use Surfaces from the Jmol popup menu to display other molecular orbitals for each polyene.

  • All the molecular orbitals for ethylene(ethene), 1,3-butadiene, 1,3,5-hexatriene, and 1,3,5,7-octatetraene are available.
  • Note the increasing number of nodes as the conjugated chain increases
  • Addition of successive conjugated double bonds progressively narrows the gap between HOMO and LUMO
  • Thus longer wavelength (lower energy) radiation required for the chromophore transition




How useful was this page?

Click on a star to rate it!

Average rating 0 / 5. Vote count: 0

No votes so far! Be the first to rate this page.

As you found this page useful...

Follow us on social media!

We are sorry that this page was not useful for you!

Let us improve this page!

Tell us how we can improve this page (in your own language if you prefer)?

Provided by the