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Planar 2-Pyridyl-1,2,3-triazole Derived Metallo-ligands: Self-assembly with PdCl2 and Photocatalysis.
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2020-04-14 , DOI: 10.1002/asia.202000284
Natalie R Lagesse 1 , Kelvin Y L Tan 1 , James D Crowley 1 , James A Findlay 1
Affiliation  

Self-assembled metallosupramolecular architectures (MSAs) with built-in functionalities such as light-harvesting metal centers are a promising approach for developing emergent properties within discrete molecular systems. Herein we describe the synthesis of two new but simple "click" ligands featuring a bidentate 2-pyridyl-1,2,3-triazole chelate pocket linked to a monodentate pyridyl (either 3- or 4-substituted, L1 and L2) unit. The ligands and the corresponding four PdII and PtII metallo-ligands (Pd1, Pd2, Pt1 and Pt2) were synthesized and characterized using nuclear magnetic resonance (NMR) spectroscopy, electrospray ionization mass spectrometry (ESI-MS), and X-ray crystallography. Solid-state characterization of the series of ligands and metallo-ligands revealed that these compounds display a co-planar conformation of all the aryl units. The PtII containing metallo-ligands (Pt1 and Pt2) were found to assemble into square (Sqr) and triangular (Tri) shaped architectures when combined with neutral PdCl2 linker units. Additionally, the ability of the PtII metallo-ligands and Tri to photocatalyze the cycloaddition of singlet oxygen to anthracene was investigated.

中文翻译:

平面2-吡啶基-1,2,3-三唑衍生的金属配体:与PdCl2的自组装和光催化作用。

具有内置功能(例如光捕获金属中心)的自组装金属超分子体系结构(MSA)是一种在离散分子系统中开发新兴性质的有前途的方法。本文中,我们描述了两个新的但简单的“咔嗒”配体的合成,这些配体的特征是与单齿吡啶基(3-或4-取代的L1和L2)单元相连的双齿2-吡啶基-1,2,3-三唑螯合物口袋。合成了配体以及相应的四个PdII和PtII金属配体(Pd1,Pd2,Pt1和Pt2),并使用核磁共振(NMR)光谱,电喷雾电离质谱(ESI-MS)和X射线晶体学对其进行了表征。一系列配体和金属配体的固态表征显示,这些化合物显示所有芳基单元的共平面构象。发现与中性PdCl2接头单元结合时,含PtII的金属配体(Pt1和Pt2)组装成正方形(Sqr)和三角形(Tri)形状的结构。另外,研究了PtII金属配体和Tri光催化单线态氧与蒽环加成的能力。
更新日期:2020-03-25
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