W2013CHM2311 Part 5 Notes

W2013CHM2311 Part 5 Notes

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Unformatted text preview: s of allyl and then connect the two ends. Side View Top View 3 p- orbitals = 3 MOs HMO Treatment of Cyclic π- Systems Energy What will happen to the rela0ve energies? ↳  For the upper orbital, the net bonding goes up by one resul0ng in one bonding and two an0bonding interac0ons. ↳  The middle orbital now has one an0bonding interac0on. ↳  The bo]om orbital now has an addi0onal bonding interac0on. HMO Treatment of Cyclic π- Systems What will happen to the rela0ve energies? ↳  Change in the number of nodes In General: π- MOs with the same number of nodes will have the same energy. Energy One Node degenerate No Nodes HMO Treatment of Cyclic π- Systems Recall Cyclobutadiene: The MO diagram can be drawn by combining the π- orbitals from ethylene fragments TOP VIEW In General: π- MOs with the same number of nodes will have the same energy. A A Destabilized compared to isolated ethylene (f...
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This note was uploaded on 03/28/2014 for the course CHM 2311 taught by Professor Richardson during the Winter '09 term at University of Ottawa.

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