W2013CHM2311 Part 4a Notes

Overlap of regions of opposite sign leads to decreased

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Unformatted text preview: omic orbitals with different rota0onal symmetry about the internuclear axis cannot interact. The following orbitals cannot interact: pz px s px Another way to see this: When orbitals overlap equally with regions of the same and opposite sign, the bonding and an0bonding effects cancel and no MO results. Bonding vs. Non ­Bonding Interac0ons x FA 2px 2py 2pz FB z 2px y Which of the following interacBons lead to bonding for the 2px orbital? 2px ± 2px 2px ± 2py 2px ± 2pz 2py 2pz Bonding vs. Non ­Bonding Interac0ons x FA 2px 2py 2pz FB z 2px 2py 2pz y Using the concepts developed on the previous slides we see that only a limited number of interacBons are allowed for p ­orbitals: 2px ± 2px is allowed 2py ± 2py is allowed 2pz ± 2pz is allowed Deriving the Appearance of Molecular Orbitals from pz ­Orbital Overlap Overlap results in construc0ve and destruc0ve...
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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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