Coordination Chemistry Flashcards
1
Q
Define the term pi-donor.
A
pi-donor ligands are ligands with filled orbitals that can interact with the metal t2g orbitals.
2
Q
What effect do pi-donor ligands have on ∆o?
A
Decrease ∆o by pushing the t2g* orbitals up to higher energy, closer in energy to eg.
3
Q
Define the term pi-acceptor.
A
pi-acceptor ligands have empty pi* orbitals that can interact with metal t2g orbitals.
4
Q
What effect do pi-acceptor ligands have on ∆o?
A
Increase ∆o as t2g goes to lower energy and pushes t2g* above the energy of eg, further apart in energy to eg.
5
Q
Give examples of pi-donor ligands.
A
Cl-, O2-, OH2
6
Q
Give examples of pi-acceptor ligands.
A
CO, CN- NO+
7
Q
Define the term pi-neutral.
A
No empty pi* or p/pi orbitals with lone pairs.
8
Q
Give an example of a pi-neutral ligand.
A
NH3
