N A L A N D A O P E N U N I V E R S I T Y
M.Sc. Chemistry, Part-II
PAPER-XIII
(Organotransition Metal Chemistry and Metal Clusters)
Annual Examination, 2018
Time 3 Hours. Full Marks 80
Answer any FIVE Questions.
All questions carry equal marks.
1. Give the concept of the formation of multiple metal-metal bonds What are the evidences in
support of metal-metal bond and quadruple bonds
2. What is metal nitrosyl Explain the structure of nitrosyl Explain the EAN for central metal
atom in Nitrosyl with the example of
2 2
Fe NO Co 3
5
Co NO CN
3. What is Zeigler-Natta catalyst How ethylene is polymerised to produce useful material like
plastic, fibres and PVC Discuss mechanism involved in it
4. Give the concept of organometallic compounds Write the methods of preparation and
structure of Zeise's salt
5. What are the steps involved in Wacker's process Explain the mechanism of wacker's process
in the oxidation of ethylene
6. What is OXO process Give the importance of OXO process Explain the mechanism of
Hydroformylation of olefin using HCo CO catalyst
7. How you will synthesize the bonded organo-transition metal compounds
8. Explain the following notation



Exhibit by the notation of back bonding from the filled metal orbitals to acceptor
orbital
9. Explain the following
Oxidative addition and reductive elimination process.
Catalytic reaction of olefin hydrogenation using Wilkinson catalyst.
10. Write short notes on any Two of the following
Synthesis of metal elusters.
MO treatment for 3 centres-2 electron Bond formation in B 2H 6 molecule.
Zintal ions.