Flashcards in D Orbital Energy In Geometric Complexes Deck (5)
What is d orbital energy in an octahedral complex?
_ _ (dz2 and dx2-y2)
_ _ _ (dxz, dxy, dyz)
Eg point directly at ligands so are high in energy due to repulsions
T2g point in between ligands and are lower in energy as there is less repulsion
What is d orbital energy in tetragonal distortion?
_ _ (dxy, dyz)
All z orbitals drop in energy due to less repulsion of z ligands in z direction
(Xy direction is compressed, z direction is stretched)
Distorted complex is more stable
What is d orbital energy in square planar?
_ _ dxz and dyz
The energy of dz2 drops further as there are no more repulsions (other z's are also stabilised)
- completely removal of ligands along z axis
Gain in CFSE
What is d orbital energy in tetrahedral?
_ _ _ (dxy, dxz, dyz)
_ _ (dx2-y2 and dz2)
Dz2 and dx2-y2 are further away from the ligands so decrease in energy due to less repulsion
dxy, dxz and dyz are closer to the ligands and so increase in energy due to more repulsions
None point directly at the ligands