Ruthenium azo complexes: Synthesis, spectra, and electrochemistry of dithiocyanato-bis{1-(alkyl)-2-(arylazo)imidazole}ruthenium(II)

Ruthenium azo complexes: Synthesis, spectra, and electrochemistry of dithiocyanato-bis{1-(alkyl)-2-(arylazo)imidazole}ruthenium(II)
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钌偶氮配合物:二硫氰酸根合双{1-(烷基)-2-(芳基偶氮)咪唑}钌(II)的合成、光谱和电化学

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发表时间:
2009
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影响因子:
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通讯作者:
P. Byabartta
P. Byabartta
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作者:
P. Byabartta

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蓝色 cis-trans-cis-RuCl2(RAaiR’)2 (I) 的银辅助水化导致溶剂物质的合成,蓝紫色 cis-trans-cis-[Ru(OH2)2(RAaiR’)2](ClO4)2 (II),其中 RAaiR’ = p-R-C6H4-N=N-C3H2-NN,缩写为 N,N′ 螯合剂(N(咪唑)和N(偶氮)分别代表N和N'); R = H (a)、p-Me (b)、p-Cl(c); R′ = Me (III)、Et (IV)、Bz (V),在温热的 EtOH 中与 NCS− 反应,生成 [Ru(NCS)2(RAaiR)2] (IIIa–Vn) 类型的红紫色二硫氰酸根络合物。通过元素分析、UV-Vis、IR、1H NMR 光谱和循环伏安法研究了这些配合物。每个步骤中的溶液结构和立体保留转化均已根据 1 H NMR 结果确定。所有配合物在可见光区域都表现出强烈的 MLCT 跃迁。它们具有氧化还原活性,表现出一种以金属为中心的氧化和连续的基于配体的还原。通过改变溶剂然后通过紫外-可见光谱分析来研究连锁异构化。
Silver-assisted aquation of blue cis-trans-cis-RuCl2(RAaiR’)2 (I) leads to the synthesis of solvento species, blue-violet cis-trans-cis-[Ru(OH2)2(RAaiR’)2](ClO4)2 (II), where RAaiR’ = p-R-C6H4-N=N-C3H2-NN, abbreviated as N,N′ chelator (N(imidazole) and N(azo) represent N and N′, respectively); R = H (a), p-Me (b), p-Cl(c); R′ = Me (III), Et (IV), Bz (V), that reacted with NCS− in warm EtOH resulting in red-violet dithiocyanato complexes of the type [Ru(NCS)2(RAaiR)2] (IIIa–Vn). These complexes were studied by elemental analysis, UV-Vis, IR, and 1H NMR spectroscopy and cyclic voltammetry. The solution structure and stereoretentive transformation in each step have been established from 1H NMR results. All the complexes exhibit strong MLCT transitions in the visible region. They are redox active and display one metal-centered oxidation and successive ligand-based reductions. Linkage isomerisation was studied by changing the solvent and then by UV-Vis spectral analysis.
一种受控释放 NO 的化合物:R,R,S,S-反式-[RuCl(NO)(cyclam)]2 (1,4,8,11-四氮杂环十四烷)的合成、分子结构、光谱、电化学和化学反应性
DOI: 10.1021/ic9912979
发表时间: 2000
影响因子: 4.6
作者:
Lang,DR;Davis,JA;Lopes,LG;Ferro,AA;Vasconcellos,LC;Franco,DW;Tfouni,E;Wieraszko,A;Clarke,MJ
通讯作者: Clarke,MJ