| 以硝基对苯二甲酸和4,4'-联吡啶为配体的四个金属Ag配合物的合成、结构多样性和电子光谱 |
| Structural Diversity, Supramolecular Assembly, and Electronic Spectra of Four Silver Coordination Polymers with Same Components of 2-Nitro-1,4-benzenedicarboxylate and 4,4'-Bipyridine |
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| 摘要: 由2-硝基-1,4-对苯二甲酸和4,4'-联吡啶作为起始原料合成了4个金属银的配位聚合物,{[Ag(4,4'-bipy)]·2-Hnbdc·2H2O·CH3OH}n (1),{[Ag(4,4'-bipy)(2-Hnbdc)]}n (2),{[Ag2(4,4'-bipy)2(2-nbdc)]·2H2O}n (3),和{[Ag2(4,4'-bipy)2(2-nbdc)(H2O)]·2H2O}n (4)。通过IR、元素分析、TG、UV和荧光光谱以及粉末衍射等手段,对配合物进行了表征和性质研究。单晶衍射分析显示,配合物1为1D阴-阳离子型聚合物,配合物2为1D双链结构,且结构中不存在溶剂分子。配合物3和4均为1D链状结构。结构的多样性主要是由配体构象、硝基对苯二甲酸的配位模式以及弱作用(如π-π堆积、Ag…Ag作用以及氢键等)导致的。结构的不同也使得它们的稳定性、紫外吸收以及荧光光谱存在着差异。 |
| 关键词: 配位模式 结构分析 银(Ⅰ)配合物 硝基对苯二甲酸 |
| 基金项目: 国家自然科学基金(No.21073157)资助项目。 |
| Abstract: Four diverse silver coordination polymers with the same components of silver, 4,4'-bipyridine(4,4'-bipy), and 2-nitro-1,4-benzenedicarboxylic acid (2-H2nbdc) have been synthesized, namely {[Ag(4,4'-bipy)]·2-Hnbdc·2H2O·CH3OH}n (1), {[Ag(4,4'-bipy)(2-Hnbdc)]}n (2), {[Ag2(4,4'-bipy)2(2-nbdc)]·2H2O}n (3), and {[Ag2(4,4'-bipy)2(2-nbdc)(H2O)]·2H2O}n (4), and characterized by IR, elemental analysis, TG, UV, fluorescence spectra, and powder X-ray analysis. The single crystal X-ray analysis showed that complex 1 is a 1D cation-anionic polymer, complex 2 is a 1D double chain without any solvent, and complexes 3 and 4 are 1D chain structures. Diverse structures differ with respect to molecular conformation, coordination modes of 2-Hnbdc, and weak interactions. In these complexes there are weak bonds, π-π aromatic stacking interactions, Ag…Ag interaction, and hydrogen bonding. The diverse structures are related to the thermal stability, UV absorptions, and fluorescence emissions. CCDC: 945166, 1; 945167, 2; 945168, 3; 945169, 4. |
| Keywords: coordination modes structure elucidation silver coordination compound nitrobenzenedicarboxylate |
| 投稿时间：2015-05-04 修订日期：2015-06-04 |
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| 马爱青,朱龙观.以硝基对苯二甲酸和4,4'-联吡啶为配体的四个金属Ag配合物的合成、结构多样性和电子光谱[J].无机化学学报,2015,31(8):1651-1660. |
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