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Dinuclear Complexes of Flexidentate Pyridine-Substituted Formazanate Ligands.
Chemistry - A European Journal ( IF 3.9 ) Pub Date : 2020-06-30 , DOI: 10.1002/chem.202002351
Ge Mu 1 , Chenggang Jiang 1 , Thomas S Teets 1
Affiliation  

The utility of flexidentate pyridyl‐substituted formazanate ligands for assembling dinuclear coordination complexes with iridium(III) and/or platinum(II) building blocks is demonstrated herein. The dinuclear complexes are prepared either via a stepwise strategy, adding one metal unit at a time, or via one‐pot self‐assembly. Eight of the new complexes, including both mononuclear precursors and dinuclear products, are structurally characterized by single‐crystal X‐ray diffraction and NMR spectroscopy, revealing several distinct binding modes of the formazanates. All complexes are characterized by UV/Vis absorption spectroscopy and cyclic voltammetry. The frontier orbitals are primarily localized on the formazanate ligand, and a characteristic, intense formazanate‐centered π→π* absorption band is observed in the absorption spectra.

中文翻译:

柔性吡啶取代的甲酸酯配体的双核配合物。

本文展示了柔韧的吡啶基取代的甲酸酯配体在组装铱(III)和/或铂(II)构成的双核配位化合物中的用途。双核配合物可以通过逐步策略,一次添加一个金属单元或通过一锅自组装来制备。八个新的复合物,包括单核前体和双核产物,在结构上都通过单晶X射线衍射和NMR光谱进行了表征,揭示了甲酸酯的几种不同结合方式。所有配合物的特征在于紫外/可见吸收光谱和循环伏安法。前沿轨道主要位于甲maz配体上,并且在吸收光谱中观察到特征性的,以甲ate为中心的强烈π→π*吸收带。
更新日期:2020-06-30
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