TM Complexes

Question 1

Symmetry of CO stretches

Answer 1

Construct basis and see if IR active, predicts how many CO bands we should see in IR spectrum

Question 2

Bonding

Answer 2

σ and π-donation

Question 3

π-donors

Answer 3

Halides, OR, NR2, donation from occupied p-orbitals, π-donor orbitals lower in energy than metal d-orbitals

Question 4

Π-acceptors

Answer 4

CO, π-acceptance into vacant 2π* orbitals, higher in energy than metal d-orbitals

Question 5

Low octahedral splitting energy

Answer 5

Weak σ-donors, strong π-donors therefore weak field ligands

Question 6

Large octahedral splitting energy

Answer 6

Strong σ-donor, strong π-acceptors therefore strong field ligands