Chapter 5 Molecular Orbital Theory
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Transcript of Chapter 5 Molecular Orbital Theory
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Chapter 5Molecular Orbital Theory
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Look at combinations of 1s wavefunctions:
Interactions of two s orbitals: H2
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Interactions of two s orbitals: H2
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Interactions of two p orbitals
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Interactions of two p orbitals
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Interactions of two p orbitals
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Interactions of two p orbitals: MO Diagram
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Interactions of two d orbitals
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Interactions of two d orbitals
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Homonuclear Diatomics
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Orbitals of samesymmetry interact.
lower E orbital decreasesin E.
higher e orbital increases in E.
Orbital Mixing
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Evidence?
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Evidence: Photoelectron Spectroscopy
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What about different atoms? How do you know relative atomic orbital energies?
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More complicated: Using symmetry and LCAO’s H2O
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More complicated: Using symmetry and LCAO’s H2O
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More complicated: Using symmetry and LCAO’s H2O
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CH4 Hybrid Orbitals: Predict Orbital Energies
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CH4 Mos: LCAO’s for H’s in Td point group. Then relate those to C’s orbitals to predict MOs.
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