中原大學九十一學年度博士班招生考試

91年6月19日 08:30 ~ 10:00  化學系    誠實是我們珍視的美德,
我們喜愛「拒絕作弊,堅守正直」的你!
科目: 有機化學和無機化學  

PART A:有機化學
 
1.
What is the difference in the structures of poly- trans -isoprene and poly- cis -isoprene? Sketch the arrangements for the two polymers. How do the two differ in their physical properties?
 
2.
What is the Clemmensen reduction? Give an example.
 
3.
What is the acyloin reaction? Give an example.
 
4.
Complete the following reactions.
 
5.
Complete the following reactions.
 
 
PART B:無機化學
 
1.
Give point group for each of the following molecules. (10 %)
a. H2O  b. CH4  c. PtCl42-  d. Mn(CO)5I  e. C60
 
2.
Derive the complete character table for the point group C3v. (10 %)
 
3.
Draw the pictures for the dz2, dx2-y2, dxy, dxz and dyz atomic orbitals. How do they form , and δ molecular orbitals in the metal-metal bonded complex ? (10%)
 
4.
Define the following terms: (a) oxidation addition and reductive elimination
(b) associative and dissociative mechanisms    (c) trans effect and trans influence
(d) crystal field theory and ligand field theory    (e) high spin and low spin
  complexes (20%)
 

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