| 多吡啶配体和银(Ⅰ)三明治配合物的构筑、结构及光谱学分析 | |
| Polypyridyl Ligands-Based Double-Decker Triggered by Silver(Ⅰ) Coordination: Crystal Structures and Spectroscopic Analysis | |
| 摘要: 三个不同的多吡啶配体:2,3-二(2-吡啶基)喹喔啉(dpq)、2,3,7,8-四(2-吡啶基) 喹喔啉(tppq)和2,3,6,7,10,11-六(2-吡啶基)喹喔啉(hpdq)分别和银反应得到3个银的配合物:[Ag(dpq)(NO3)2]n(1)、[Ag4(tppq)2(NO3)4](2)和[Ag6(hpdq)2(NO3)6] (3).结果显示,3个配体分别和银形成了四核(1)、四核(2)以及六核(3)的三明治单晶结构,1和2的四核结构依靠Ag和NO3-之间的相互作用进一步延伸为二维面,而3的六核结构依靠C-H…O的氢键作用形成三维网.此外,在研究3个配体和金属银在溶液中的光谱学性质时发现,配体hpdq和银反应的紫外吸收光谱和荧光发射光谱都要比其它2个配体灵敏度高. | |
| 关键词: 多吡啶配体 金属有机配合物 自主装 紫外光谱 荧光光谱 | |
| 基金项目: 国家自然科学基金(No.21301100)、河南省教育厅基金(No.13A150819) 和南阳师范学院专项基金(No.ZX2013029)资助项目. | |
| Abstract: Three Ag(Ⅰ) coordination complexes, namely [Ag(dpq)(NO3)2]n(1), [Ag4(tppq)2(NO3)4](2) and [Ag6(hpdq)2(NO3)6](3) have been synthesized based on three polypyridyl ligands: 2,3-di(pyridin-2-yl)quinoxaline (dpq), 2,3,7,8-tetra(pyridine-2-yl)pyrazino[2,3-g]-quinoxaline (tppq) and 2,3,6,7,10,11-hexakis(2-pyridyl) dipyrazino[2,3-f:2',3'-h]quinoxaline) (hpdq), respectively. Single crystal X-ray diffraction analyses reveal that complexes 1~3 assembled based on distinct double-decker unit comprising two respective polypyridyl ligands but four, four, and six Ag(Ⅰ) ions, respectively. Among them, The double-decker units in 1 and 2 both extended to two dimensional net via the coordination interaction between Ag(Ⅰ) and NO3-anion, while that in 3 to three dimensional net via C-H…O hydrogen bond. Furthermore, the coordintion interaciton of polypyridyl ligands and Ag(Ⅰ) ion in solution was also investigated by UV-Vis absorption and fluorescence spectroscopic analyses, which witnesses the much more sensitive spectral response of hpdq to the additon of Ag(Ⅰ) ion than other two ligands. CCDC: 868734, 1; 868735, 2; 790268, 3. | |
| Keywords: polypyridyl ligands metal-organic coordination complexes self-assembly UV-Vis spectrum fluorescence spectrum | |
| 投稿时间：2015-09-05 修订日期：2016-01-06 | |
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| 赵强,刘秀明,冯睿,章应辉,孔曼曼,刘洋.多吡啶配体和银(Ⅰ)三明治配合物的构筑、结构及光谱学分析[J].无机化学学报,2016,32(3):537-544. | |
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