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CH1012
CRYSTAL FIELD
THEORY II
• As the ligands
approach the metal centre:
If the direction in which the occupied metal orbitals point is directly at the electron-rich ligand then the electron energies increase because of repulsions.
If the direction in which the occupied metal orbitals point is directly at the electron-rich ligand then the electron energies increase because of repulsions.
• In an octahedral
complex, this will occur for the dz2 and dx2-y2 orbitals.
• There will therefore be a splitting of the 5 orbitals into 2 sets:
1) dz2 and dx2-y2 and 2) dxy, dxz, and dyz,
eg set t2g set
1) dz2 and dx2-y2 and 2) dxy, dxz, and dyz,
eg set t2g set
