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Synthesis and coordination chemistry of a potential precursor to a triarylamminium radical cation ditopic ligand

机译:三芳基铝自由基阳离子对位配体的潜在前体的合成和配位化学

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The multi-step synthesis of a new ditopic ligand (7) is reported, which is a potential precursor to a triarylamminium radical cation. The preparation and full characterization of three new bimetallic first row transition metal [M = Mn (8), Ni (9), Cu (10)] coordination complexes containing this ligand are described, including detailed electrochemical and magnetic studies. Of note, a ground triplet state is observed in the bimetallic Cu complex. Chemical oxidation of these precursor complexes generated persistent complexes containing the dication of the ligand, which is confirmed through UV-Vis and EPR spectroscopies. The variable temperature magnetic properties of the dicationic complexes are described and included in the discussion are results from density functional theory calculations of bimetallic radical cation complexes.
机译:报道了新的对位配体(7)的多步合成,其是三芳基铵自由基阳离子的潜在前体。描述了三种新型双金属第一行过渡金属[M = Mn(8),Ni(9),Cu(10)]配合物的制备和全部表征,包括详细的电化学和磁性研究。值得注意的是,在双金属铜配合物中观察到基态三重态。这些前体复合物的化学氧化生成了包含配体指示的持久性复合物,这通过紫外可见光谱和EPR光谱学得以证实。描述了双金属配合物的可变温度磁性,并在讨论中包括了双金属自由基阳离子配合物的密度泛函理论计算结果。

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