| 研究生: |
林殿偉 Lin, Dian-Wei |
|---|---|
| 論文名稱: |
鐵硫錯合物的合成與鑑定:合成出以硫為橋接的四價雙鐵錯合物 Syntheses and Characterization of Iron Thiolate Complexes:the Isolation of a (μ-sulfido)diiron(IV) Complex |
| 指導教授: |
許鏵芬
Hsu, Hua-Fen |
| 學位類別: |
碩士 Master |
| 系所名稱: |
理學院 - 化學系 Department of Chemistry |
| 論文出版年: | 2011 |
| 畢業學年度: | 99 |
| 語文別: | 中文 |
| 論文頁數: | 130 |
| 中文關鍵詞: | 固氮酵素 、雙鐵錯合物 |
| 外文關鍵詞: | nitrogenase, diiron(IV) compound |
| 相關次數: | 點閱:50 下載:1 |
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鐵硫化學在生物系統中扮演著重要的角色。為了在這方面可以了解更多重要的訊息,我們實驗室主要著重在鐵硫錯合物在多硫配位基環境下的化學。在我的實驗中,利用四芽基tris(benzenethiolato)phosphine及其衍生物做為配位基去研究鐵硫錯合物的反應性。因此,我合成並純化了六種雙核與單核的的鐵錯合物,藉由元素分析、紫外光-可見光光譜、紅外光光譜、X-光單晶繞射儀、X-光吸收光譜、電噴灑游離質譜與核磁共振光譜。這些化合物分別為[Fe2(μ-S)(PS3”)2 ](1)、[Fe2(μ-S6)(PS3”)2]2- (2)、Fe2(μ-Se)(PS3”)2 (3)、[Fe2(PS3”)2]2- (4)、[Fe2(μ-Se2)(PS3)2]2- (5)與[FeII(PS3)2] (6)。錯合物1與3為雙鐵(IV)化合物,分別以硫離子與硒離子為橋接;錯合物2與5為雙鐵(III)化合物,分別以過硫離子(S62-)與過硒離子(Se22-)為橋接;錯合物4為非定域混價數雙鐵(II, III)錯合物;錯合物6為六配位單鐵(II)中心,以兩個PS3配位基鍵結,這兩個配位基是以分子內的雙硫鍵為鍵結。
Iron sulfur chemistry plays an important role in biological systems. In our effort to understand fundamental information in this aspect, our laboratory has focused on chemistry of iron complexes in S-rich ligation environment. At this particular work, tris(benzenethiolato)phosphine ligand and derivatives has been utilized as title ligands to study the reactivity of iron thiolate complexes. Thus, six dinuclear and mononuclear iron complexes have been isolated and characterized by various techniques such as elemental analysis, UV-vis-NIR spectroscopy, IR spectroscopy, X-ray crystallography, X-ray absorption spectroscopy, electrospray-ionization mass spectroscopy and nuclear magnetic resonance spectroscopy. They are [Fe2(μ-S)(PS3”)2 ](1)、[Fe2(μ-S6)(PS3”)2]2- (2)、Fe2(μ-Se)(PS3”)2 (3)、[Fe2(PS3”)2]2- (4)、[Fe2(μ-Se2)(PS3)2]2- (5) and [FeII(PS3)2] (6). Complex 1 and 3 are diiron(IV) compounds, bridged by sulfido and selenido, respectively. Complex 2 and 5 diiron(III) complexes bridged by persulfide (S62-) and perselenide (Se22-), respectively. Complex 4 is a delocalized mixed-valence diiron(II, III) complex;Complex 6 has a six-coordinate iron(II) center by binding to two PS3 ligands where two intramolecular disulfide bonds were formed between two ligands.
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