中原大學九十學年度博士班入學招生考試

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科目：有機化學和無機化學	（共4頁 第1頁）

有機化學：
1.	寫出下列化合物之構造. (如有立體化學問題請寫清楚) (10%)
	a. propyl butanoate b. N, N- dimethylbenzamide c. Bicyclo[3.3.0]octane d. 1, 5- heptadiene
2.	寫出下列反應可能的產物. (如有立體化學問題請寫清楚) (10%)
	a. CH2 = CHCH2CH3 + HCL→ b. + H3O2CC≡CCO2CH3 c. d.
3.	請解釋為何二不同反應物會得到完全相同的產物且相同的產率? (10%)
4.	寫出下列反應可能的 mechanism 10%
(a).
(b).	Fisher indole synthesis
5.	The 1H-NMR spectra of 2- Methy1- 6- methylen- 7- octen- 4-ol*** are given bellow. Assign the peaks in the spectra as much as possible.(i.e.)determine which specific peak in the spectrum is due to which proton in the structure) Give the reasons of your assignments.　(10%)
	The spectrum of 2- Methyl- 6- methylen- 7- octen- 4- ol in CDC13 at 300MHz. The upper parts are the blow-up of the spectrum in specific regions. In the right it is the part of the spectrum at 1 ppm region taken
無機代學: 10 points each
1.	Derive the molecular orbital diagram for NH3.
2.	What is Jahn-Teller distortion? In what conditions will this occur? Consider high and low spin for d1-d10 complexes.
3.	Draw the pictures of the five d atomic orbitals. How do they form σ, π and δ molecular orbitals?
4.	Comment and/or correct the following statements:
	a. The most intense d-d band in [CoCl4]2- is more intense than that in that in [MnCl4]2- b. The 3A2g---> 3T2g transition in [NiCl6]4- is more intense than the 3T1--->3T2 transition in [NiCl4]2- c. The ion Fe3+ in octahedral environment shows no absorption bands at all. d. For the complex [Co(NH3)6]2+, the transition 4T2g---->4T1g is more intense than the transition 4T2g---->4A2g e. The intensity of ligand field transition is greater than that of metal to ligand charge transfer.
5.	Provide plausible reasons for the difference in the IR wavenumbers between each of the following pair : (a) MO(PF3)3(CO)3: 2040, 1991 cm-1 versus Mo(PMe3)3(CO)3: 1945, 1851 cm-1 (b) MnCp(CO)3: 2023, 1939 cm-1, versus MnCp*(CO)3: 2017, 1928 cm-1.

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