1. For each of the following, draw the structure, determine the point group, find the LFSE (in terms of Dq and P), estimate the magnetic moment in terms of Bohr-Magnetons, predict the stability based on the EAN rule, and indicate if the complex will be Jahn-Teller active. If the complex is Jahn-Teller active, indicate the nature of the distortion.
a. dichloro-η²-etheneplatinum (II).
b. pentachloronitridoosmate(VI) ion.
c. pentacyanonitrosylferrate(III) ion. (Assume all of the ligands are linear with respect to the metal.)
2. A CO ligand can often be removed from carbonyl complexes using light. Explain this observation in terms of molecular orbital theory for an octahedral complex.
3. PF3 has a similar position in the spectrochemical series as CO. Both ligands act similarly: the donate electrons to the metal through a lone pair and accept electrons from metal π orbitals. Explain how PF3 can act as a σ donor and a π acceptor in metal complexes.
4. The compound Rh(H)(CO)(PPh3)3 can be used as a hydroformylation catalyst. Draw the structure and indicate how this compound might act catalytically. (PPh3 = triphenylphosphine).