W2013CHM2311 Part 4a Notes

Try to derive the mos without looking at the answers

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Unformatted text preview: ϕ2pxB DestrucBve Interference ϕ2pxA ϕ2pxB ψMO= caϕ2pxA + cbϕ2pxB ψ*MO = caϕ2pxA  ­ cbϕ2pxB Overlap of regions of the same sign leads to increased concentra0on of electrons between nuclei. Overlap of regions of opposite sign leads to decreased concentra0on of electrons between nuclei. Deriving the Appearance of Molecular Orbitals from py ­Orbital Overlap This looks the same as px overlap, only rotated 90o ConstrucBve Interference ϕ2pyA ϕ2pyB DestrucBve Interference ϕ2pyA ϕ2pyB ψMO= caϕ2pyA + cbϕ2pyB ψ*MO = caϕ2pyA  ­ cbϕ2pyB Overlap of regions of the same sign leads to increased concentra0on of electrons between nuclei. Overlap of regions of opposite sign leads to decreased concentra0on of electrons between nuclei. p ­Orbital Overlap: Three Types Bonding MOs ψMO = caϕA + cbϕB px , px overlap: side ­to ­side py , py overlap: side ­to ­side pz , pz overlap: end ­to ­end or head ­to ­head AnBbonding MOs ψ*MO = caϕA  ­ cbϕB Symmetry of Molecular Orbitals σ ­Orbitals: An orbital that does not have a node...
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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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