W2013CHM2311 Part 4a Notes

2pza 2pzb atomic orbitals three nodes

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Unformatted text preview: will show the atomic orbital of one fluorine on the lem and the other fluorine on the right: 2px 2py 2pz 2s 2px 2py 2pz 2s What About The MO Diagram of F2? energy The molecular orbitals formed from the overlap of the s ­orbitals will resemble those of H2 (and He2). W hat do the MOs from overlap of p ­orbitals look like? And what are their energies? 2px 2py 2pz 2px 2py 2pz ψ*MO= ϕ2sA - ϕ2sB 2s 2s ψMO= ϕ2sA + ϕ2sB p ­Orbital Interac0ons The orienta0on in which the two atoms will approach one another must be defined (i.e. determine the internuclear axis) in order to iden0fy which orbitals on FA will interact with which orbitals on FB. x z y F FF FA F FF FB z ­axis Molecular Orbitals from p ­orbitals When p ­orbitals overlap to form molecular orbitals, two types of bonding overlap can occur: 1) End ­to ­end forms σ bonds Whether or not an atomic orbital is occupied by electrons is irrelevant when determining the new MOs! 2) Side ­to ­side forms π bonds # MOs = # AOs = 6 ↳  each atom contributes three p ­orbitals p ­Orbital Interac0ons That Do NOT Lead To Bonding Orthogonal orbitals or at...
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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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