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15 Cards in this Set
- Front
- Back
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Ambidentate ligands
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connect to metal ions through several (at least two) different atoms
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Crystal Field Theory
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Hans Bethe
Two parts of the model: 1) metal ion on which the d orbitals are explicitly used 2) ligands, however are simply treated as point charges electron-electron repulsion between metal electrons in d orbitals and the negatively charged ligand |
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Ligand Field Theory
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Crystal Field Theory but with more parameters
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Ligand to Metal Charge Transfer (LMCT)
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electron migration from an orbital that is mostly ligand in character to an empty d-orbital that is mostly metal in character
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Trans Effect: Kinetic Effect
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The lability of a ligand bonded to a d8 metal center is largely determined by the ligand that is trans to it
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Strong Trans Effect Ligands
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*are pi bonding
ex. Pd+, Au3+ |
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Characteristics of Titanium
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abundant, found in nature as FeTiO3 & TiO2
-very stiff -corrosion resistant |
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hepticity
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parts of connection
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Ligands that are isoelectronic with CO
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CN-, N2
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Strong field ligand
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high energy transition (ex. CO)
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Weak field ligand
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low energy transition (ex. Br)
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Tetrahedral complexes are always ______ spin
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HIGH!
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Jahn-Teller Effect
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ground electronic configuration of a non-linear complex is orbitally degenerate and asymmetrically filled, the complex distorts to remove degeneracy and achieve lower energy
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Hydrogen embrittlement
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H2 compromises the integrity of the metal in the complex; metal becomes brittle
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Oxidative Addition
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The addition of a specific X-Y to a metal with either 1) cleavage of the X-Y bond and formation of M-X, M-Y bonds or 2) reduction of the X-Y bond order and the formation of a metallacycle
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