| 研究生: |
林友文 Lin, You-Wen |
|---|---|
| 論文名稱: |
鑭金屬與OBA 配位基所形成ㄧ系列聚合物之結構與鑑定 Structures and Characterization of a Series Lanthanide Coordination Polymers Based on the OBA Ligand |
| 指導教授: |
許桂芳
Hsu, Kuei-Fang |
| 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: | 2008 |
| 畢業學年度: | 96 |
| 語文別: | 中文 |
| 論文頁數: | 121 |
| 中文關鍵詞: | 鑭金屬 |
| 外文關鍵詞: | OBA |
| 相關次數: | 點閱:58 下載:1 |
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鑭金屬與4,4’- oxybisbenzoate (OBA)配位基所形成ㄧ系列聚合物藉由熱溶劑法合成。分別命名為YbOBA-1,YbOBA-2, YbOBA-3,YbOBA-4,NdOBA-5 和GdOBA-6。在YbOBA-1 至-3 結構當中,Yb3+ 離子和OBA配位基分別形成三個不同的二維網絡結構。在YbOBA-4 結構當中,Yb3+離子則是和OBA 基形成一個三維的孔洞結構且Na+離子填充在Yb 金屬旁。另外利用不同的鑭金屬離子(Er3+,Eu3+,Gd3+,Tb3+, Nd3+)合成YbOBA-4這個系統,也可以得到相同的孔洞結構。且YbO BA-4 在加熱到250oC 時,架構仍維持一定的穩定性。另外利用鉀離子去取代鈉離子,則是合成出另一個孔洞結構NdOBA-5。特別的是結構中包含了Nd3+離子三聚體,其中Nd-Nd 距離為4.1102(4) Å,Nd-Nd-Nd 角度為176.5 o。同時鉀離子更進一步地引導出新的孔洞結構GdOBA-6。
A series of lanthanide-based coordination polymers incorpo rating the 4,4’-oxybisbenzoate (OBA) ligands have been synthesized. These compounds are labeled as YbOBA-1,YbOBA-2, YbOBA-3, YbOBA-4, NdOBA-5 and GdOBA-6 according to their versatile structures. For YbOBA-1 to -3, the Yb3+
ions are assembled with the OBA ligands to form three distinct two-dimensional networks, respectively. For YbOBA-4, the Yb3+ ions are assembled with theOBA ligands to form a three-dimensional porous framework where the Na+ ions are distributed in the channels. The analogous compounds by the Er3+,Gd3+,Eu3+,Tb3+ and Nd3+ ions posses the same frameworks as that in YbOBA-4. The porous framework in YbOBA-4 was maintained until 250oC, as indicated by
the well crystalline of dehydrate phase of Na[Yb(OBA)2]. As the Na+ ions replaced by the K+ ions, another porous framework of NdOBA-5 is formed. Particularly,this frame work contains trinuclear neodymium units with the neighbor ing Nd-Nd distance of 4.1102(4) Å and angle of Nd—N1—Nd: 176.5 o. Further,the K+ ions induces a new porous framework of GdOBA-6.
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