資料載入中.....
|
請使用永久網址來引用或連結此文件:
http://ir.ncue.edu.tw/ir/handle/987654321/18927
|
| 題名: | Argentophilic Interaction and Anionic Control of Supramolecular Structures in Simple Silver Pyridine Complexes |
| 作者: | Chen, Chih-Yuen;Zeng, Jing-Yao;Lee, Hon Man |
| 貢獻者: | 化學系 |
| 日期: | 2007-01
|
| 上傳時間: | 2014-08-14T04:29:10Z
|
| 出版者: | Elsevier |
| 摘要: | The synthesis and characterization of three simple 1:2 silver(I) pyridine adducts of different counter-anions, [Ag(py)2]+ · X− (X = ClO4, 1; BF4, 2; PF6, 3), are reported. The structural studies for 1–3 reveal the presence of strong ligand-unsupported argentophilic interactions between [Ag(py)2]+ ions, forming pairs of . The Ag⋯Ag contact distances are 2.96–3.00 Å. In 1 and 2, pairs of are further linked into 1-D infinite chains by a combined set of multiple Ag⋯Ag close contacts (3.34–3.37 Å), offset ‘head to head’ π–π stacking, and anion bridging interactions. Such combined set of interactions is anion-dependant with 1 and 2 containing anions of tetrahedral geometry and , affording essentially the same supramolecular architecture. Metal–anion interactions are crucial in organizing the 1-D chains into 3-D networks. The ES-MS studies of 1 and 2 provide positive evidence for the aggregation of silver(I) ions in solution. In contrast, for 3 with the counter-anion of octahedral , pairs of are organized into a 3-D network via a combined set of Ag⋯F contacts, C(H)⋯F hydrogen bonds, and ‘head to tail’ π–π stacking interactions. No extended 1-D polymeric chains of silver ions are present in 3. |
| 關聯: | Inorganica Chimica Acta, 360(1): 21-30 |
| 顯示於類別: | [化學系] 期刊論文
|
文件中的檔案:
| 檔案 |
大小 | 格式 | 瀏覽次數 |
|---|
| index.html | 0Kb | HTML | 711 | 檢視/開啟 |
|
在NCUEIR中所有的資料項目都受到原著作權保護.
|
