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-I
PAPER-VII
(Reaction Mechanism and Supramolecular Chemistry)
Annual Examination, 2017
Time 3 Hours. Full Marks 80
Answer any FIVE Questions.
All questions carry equal marks.
1. Define photo substitution and explain with suitable example.
2. Describe the path way of optical inversion and isomerization.
3. Write notes on Helicate, Rosettes, Cage in Supramolecular chemistry.
4. Mention substitution reaction which undergoes without Cleavage of metal-ligand. Give
mechanism with suitable examples.
5. Why certain electron transfer reaction proceed by inner sphere mechanism and some by outer
sphere mechanism Explain.
6. Explain the following
Bailar twist mechanism.
Marcus-Husch theory.
7. How the supramolecular catalysts are similar to enzyme catalyst What are differences
between them
8. Give two general methods of preparation of metal alkoxide. Draw the structure of dimeric and
tetrameric alkoxides.
9. Describe the energy state of octahedral Chromium(III) complex and associated photo
chemical process.
10. Write notes on the following
SNCB mechanism.
Photochemical reaction.