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首页> 外文期刊>Crystal growth & design >Polyoxometalate-induced new self-assemblies based on copper ions and bichelate-bridging ligands
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Polyoxometalate-induced new self-assemblies based on copper ions and bichelate-bridging ligands

机译：多金属氧酸盐诱导的基于铜离子和双螯合桥配体的新自组装

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摘要

The introduction of polyoxometalates (POMs) into the metal-organic complex synthetic system containing copper ions and bichelate-bridging ligands (bis(3-(2-pyridyl)pyrazole-1-ylmethyl)benzene, bppmb) led to the isolation of three new organic-inorganic hybrid compounds [Cu~(II)Lo] _2H[BW_(12)O_(40)]·4H_2O (1), [Cu~ILo]_4[SiW_(12)O_(40)]·5H _2O (2), and [CuLp]_3H_2[BW_(12)O _(40)]·5H_2O (3) (Lo = 1,2-bppmb and Lp = 1,4-bppmb). All three compounds were hydrothermally synthesized and characterized by elemental analyses, IR spectra, TG analyses, powder X-ray diffraction, and single-crystal X-ray diffraction analyses. In these compounds, the use of Keggin-type POMs induces the formation of a series of new metal-organic secondary building units based on the copper ions and bppmb ligands such as helical chain and chiral M?bius Strip, which further form interesting supramolecular self-assemblies with the polyoxoanions. The degradation of Rhodamine-B (RhB) under UV irradiation with compounds 1-3 as the heterogeneous photocatalysts was investigated, and these compounds show good photocatalytic properties for RhB degradation.
机译：将多金属氧酸盐（POMs）引入包含铜离子和双螯合桥联配体（双（3-（2-吡啶基）吡唑-1-基甲基）苯，bppmb）的金属-有机络合物合成系统中导致分离出三种新的有机-无机杂化化合物[Cu〜（II）Lo] _2H [BW_（12）O_（40）]·4H_2O（1），[Cu〜ILo] _4 [SiW_（12）O_（40）]·5H _2O（ 2），[CuLp] _3H_2 [BW_（12）O _（40）]·5H_2O（3）（Lo = 1,2-bppmb和Lp = 1,4-bppmb）。这三种化合物都是水热合成的，并通过元素分析，IR光谱，TG分析，粉末X射线衍射和单晶X射线衍射分析进行表征。在这些化合物中，使用Keggin型POM会诱导形成一系列基于铜离子和bppmb配体的新型金属有机二级建筑单元，例如螺旋链和手性Mbius条纹，这进一步形成了有趣的超分子自我聚氧阴离子的组装。研究了以化合物1-3为多相光催化剂的UV照射下若丹明B（RhB）的降解，这些化合物对RhB的降解显示出良好的光催化性能。

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