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Crystal Field Theory: Spin States, Ligand Field Strength, and Applications

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Intro to Crystal Field Theory

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    Example
    00:59
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    For tetrahedral complexes, the greatest ligand-metal interactions occur in between the axes.
    02:37
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    For octahedral complexes, the greatest ligand-metal interactions occur on or along the axes.
    02:01

Crystal Field Theory: Octahedral Complexes

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    Example
    00:43
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    The crystal field splitting pattern for octahedral complexes has the d orbitals on or along the axes as having the higher energy.
    03:04

Crystal Field Theory: Tetrahedral Complexes

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    The crystal field splitting pattern for tetrahedral complexes has the d orbitals in between the axes as having the higher energy.
    01:38
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    Example
    01:11

Crystal Field Theory: Square Planar Complexes

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    Square planar complexes show the most complex splitting pattern.
    02:07
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    Example
    01:17

Crystal Field Theory Summary

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    Example
    02:46
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    The greatest ligand-orbital interactions result in the greatest increase in energy.
    03:01

Magnetic Properties of Complex Ions

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    Low-Spin Complexes are associated with large Δ values and High-Spin Complexes are associated with small Δ values.
    04:23
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    Finding tetrahedral and square planar geometries helps to determine the low vs high spin of complexes.
    01:43
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    Example
    02:14

Strong-Field vs Weak-Field Ligands

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    Example
    02:09
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    Strong-Field Ligands result in a large Δ and Weak-Field Ligands result in a small Δ.
    02:40