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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >High-nuclearity silver(I) cluster-based coordination polymers assembled with multidentate oligo-α-heteroarylsulfanyl ligands
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High-nuclearity silver(I) cluster-based coordination polymers assembled with multidentate oligo-α-heteroarylsulfanyl ligands

机译：高核银（I）簇基配位聚合物与多齿低聚物-α-杂芳基硫烷基配体组装

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摘要

Two novel coordination polymers [Ag_(16)(SO_4)_8][Ag_4(SO_4)_2]_3(L_1)_(12)?nH_2O (n = 72) (1) and [Ag_(10)(SO_4)_5(L_2)_4- (H_2O)_2]?8H_2O (2) based on conformationally variable oligo-α-heteroarylsulfanyl ligands 2-(pyrazin- 2-ylthio)-6-(pyridin-2-ylthio)pyrazine (L_1) or 2,6-bis(pyrazin-2-ylthio)pyrazine (L_2) and sulfate-templated high-nuclearity Ag(I) clusters as structure-building units (SBUs) have been synthesized under mild conditions. Single-crystal X-ray analysis showed that complex 1 exhibits a porous three-dimensional framework containing Ag_(16)(SO_4)_8 and Ag4(SO_4)2 SBUs that are interconnected by L_1 ligands, whereas 2 has a much denser network constructed from Ag_(10)(SO_4)_5 SBUs and L_2 linkers. To our knowledge, the Ag_(16)(SO_4)_8 cluster core found in 1 is the largest sulfate-based polynuclear SBU in coordination polymers, and the 14-connected Ag_(10)(SO_4)_5 in 2 is the highest-connectivity Ag(I) cluster SBU reported to date. These two complexes were fully characterized by infrared spectroscopy, elemental analysis, powder X-ray diffraction, thermogravimetric analysis and differential scanning calorimetry.
机译：两种新型配位聚合物[Ag_（16）（SO_4）_8] [Ag_4（SO_4）_2] _3（L_1）_（12）？nH_2O（n = 72）（1）和[Ag_（10）（SO_4）_5（ L_2）_4-（H_2O）_2]？8H_2O（2）基于构象可变的寡-α-杂芳基硫烷基配体2-（吡嗪-2-基硫基）-6-（吡啶-2-基硫基）吡嗪（L_1）或2，已经在温和条件下合成了6-双（吡嗪-2-基硫基）吡嗪（L_2）和以硫酸盐为模板的高核Ag（I）簇作为结构构建单元（SBU）。单晶X射线分析表明，配合物1表现出一个多孔的三维框架，其中包含通过L_1配体互连的Ag_（16）（SO_4）_8和Ag4（SO_4）2 SBU，而2则具有更密集的网络Ag_（10）（SO_4）_5 SBU和L_2接头。据我们所知，在1中发现的Ag_（16）（SO_4）_8簇芯是配位聚合物中最大的硫酸盐基多核SBU，而在2中14连接的Ag_（10）（SO_4）_5是最高的连通性迄今已报告了Ag（I）簇SBU。通过红外光谱，元素分析，粉末X射线衍射，热重分析和差示扫描量热法对这两种配合物进行了全面表征。

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