Synthesis, photophysical, and electrochemical properties of RuII polypyridyl complexes bridged with two tetrapodal symmetric and one asymmetric ligands

Cheng F.; Chen J.; Sun C.; Tang N.; Chen L.

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Synthesis, photophysical, and electrochemical properties of RuII polypyridyl complexes bridged with two tetrapodal symmetric and one asymmetric ligands

机译：用两个四足对称和一个不对称配体桥接的RuII聚吡啶基配合物的合成，光物理和电化学性质

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Two symmetric tetrapodal ligands L~(1-2) and one asymmetric tetrapodal ligand L3 based on 4,5-diazafluoren have been synthesized and characterized. Ligands L~(1-2) formed by the condensation of pentaerythrityl tetratosylate with 4,5-diazafluoren-9-oxime and 9-(4-hydroxy)phenylimino-4,5-diazafluorene, respectively. L~3 was prepared by two steps, 9-(4-hydroxy)phenylimino-4,5-diazafluorene reacted with pentaerythrityl tetratosylate affording 1,1′,1″-tris[(4,5- diazafluoren-9-ylimino)phenoxymethyl]-1?-(p-tosyloxymethyl)-methane, which reacted with 4,5-diazafluoren-9-oxime affording the asymmetric ligand L~3. Three tetranuclear Ru~(II) complexes [(bpy)_8L~(1-3)Ru_4](PF_6)_8 (bpy = bipyridine) were obtained by the reaction of Ru(bpy)_2Cl_2·_2H_2O with ligands L~(1-3). Spectroscopic studies of these complexes exhibit metal-to-ligand charge transfer absorptions at 440-445 nm and emissions at 575-579 nm. The electrochemical behaviors of these complexes are consistent with one RuII-based oxidation couple and three ligand-centered reduction couples.

机译：合成并表征了基于4,5-二氮杂芴的两个对称的四足配体L〜（1-2）和一个不对称的四足配体L3。季戊四醇四甲苯磺酸酯分别与4,5-二氮杂芴-9-肟和9-（4-羟基）苯基亚氨基-4,5-二氮杂芴缩合形成的配体L〜（1-2）。 L〜3分两步制备：9-（4-羟基）苯基亚氨基-4,5-二氮杂芴与季戊四醇四甲苯磺酸酯反应，得到1,1'，1''-三[[4,5-二氮杂芴-9-ylimino）苯氧甲基] -1′-（对甲苯磺酰氧基甲基）-甲烷与4，5-二氮杂芴-9-肟反应，得到不对称配体L〜3。通过Ru（bpy）_2Cl_2·_2H_2O与配体L〜（1-的反应）得到三种三核Ru〜（II）配合物[（bpy）_8L〜（1-3）Ru_4]（PF_6）_8（bpy =联吡啶）。 3）。这些配合物的光谱研究表明，金属到配体的电荷转移吸收在440-445 nm处，发射在575-579 nm处。这些配合物的电化学行为与一个基于RuII的氧化对和三个以配体为中心的还原对一致。

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《Zeitschrift fur Anorganische und Allgemeine Chemie》 |2011年第1期|共7页
作者
Cheng F.; Chen J.; Sun C.; Tang N.; Chen L.;
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正文语种 eng
中图分类化学;
关键词
Asymmetric ligand; Electrochemistry; Photophysics; Ruthenium; Symmetric ligand;

机译：不对称配体;电化学;光物理;钌;对称配体;

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1. Synthesis, photophysical, and electrochemical properties of RuII polypyridyl complexes bridged with two tetrapodal symmetric and one asymmetric ligands [J] . Cheng F., Chen J., Sun C., Zeitschrift fur Anorganische und Allgemeine Chemie . 2011,第1期

机译：用两个四足对称和一个不对称配体桥接的RuII聚吡啶基配合物的合成，光物理和电化学性质
2. Di- and tetranuclear ruthenium(II) and/or osmium(II) complexes of polypyridyl ligands bridged by a fully conjugated aromatic spacer: Synthesis, characterization, and electrochemical and photophysical studies [J] . Bilakhiya AK., Tyagi B., Paul P., Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics . 2002,第15期

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3. Polypyridyl Ruthenium(II) Complexes with Tetrazolate-Based Chelating Ligands. Synthesis, Reactivity, and Electrochemical and Photophysical Properties [J] . Stefano Stagni, Enrico Orselli, Antonio Palazzi Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics . 2007,第22期

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Synthesis, photophysical, and electrochemical properties of RuII polypyridyl complexes bridged with two tetrapodal symmetric and one asymmetric ligands

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