Synthesis, Characterization, and Reversible Multielectron Redox Properties of a Biradical Yttrium Complex Containing Bis(2‐isopropylaminophenyl)amide
作者:Lili Duan、Yi‐Bo Jia、Xiao‐Gen Li、Yue‐Ming Li、Hongfan Hu、Jianfeng Li、Chunming Cui
DOI:10.1002/ejic.201601457
日期:2017.4.18
The redox-active ligand, bis(2-isopropylamino-phenyl)amide (NNN), was introduced into yttrium metal complex to yield ionic yttrium complex [(NNNsq*)2Y]-[Li(THF)4]+ (2; sq = semiquinonate form). A solid-state magnetic measurement of 2 (μeff = 2.40 μB) indicated that the presence of two unpaired electrons were on two NNN ligands separately. The paramagnetic compound 2 has been characterized by EPR spectroscopy
将氧化还原活性配体双(2-异丙基氨基-苯基)酰胺(NNN)引入钇金属络合物中以产生离子钇络合物 [(NNNsq*)2Y]-[Li(THF)4]+ (2; sq = 半醌酸盐形式)。2 (μeff = 2.40 μB) 的固态磁测量表明两个未配对电子的存在分别位于两个 NNN 配体上。顺磁性化合物 2 在稀释的 THF 冷冻溶液中通过 EPR 光谱表征,这表明没有分子内自由基 - 自由基相互作用。2 的电化学特征在于-1.193 V 的准可逆双电子还原过程归因于 22--/2 氧化还原对,以及两个连续的单电子氧化过程 -0.406 V 和 -0.156 V 归因于可逆的 2/2 + 氧化还原对和准可逆的 2+/22+ 氧化还原对分别。