作者:Da Jin、Xiaofei Sun、Alexander Hinz、Peter W. Roesky
DOI:10.1039/d2dt00456a
日期:——
The synthesis and characterisation of rare-earth metal complexes with redox-active formazanate ligands are described. Deprotonation of the neutral formazan ligand L1H (L1 = PhNNC(Ph)NNPh) with [LnN(SiMe3)2}3] (Ln = Y, Sm, Dy) resulted in homoleptic tris(formazanate) complexes with the general formula [(L1)3Ln] (Ln = Y (1), Sm (2), Dy (3)), in which the central metal atom is coordinated by six N atoms
描述了具有氧化还原活性甲氮酸盐配体的稀土金属配合物的合成和表征。中性甲臜配体 L 1 H (L 1 = PhNNC(Ph)NNPh) 与 [LnN(SiMe 3 ) 2 } 3 ] (Ln = Y, Sm, Dy) 的去质子化导致与通式[(L 1 ) 3 Ln] (Ln = Y ( 1 ), Sm ( 2 ), Dy ( 3 )),其中中心金属原子由6个N原子配位,呈螺旋桨式结构。为了产生杂配体,一种新型甲臜配体 L 2 H (L 2 = PhNNC(4-t BuPh)NNPh}) 被采用。通过使用三价前体 [SmCp* 2 (μ-Cl) 2 K(thf)] (Cp* = η 5 -C 5 Me 5 ) 或 [LnCp 2 Cl] 2 (Cp = η 5 -C 5 H ) 进行盐复分解5 , Ln = Dy, Yb) 和 [L 2 K(thf)] 形成单(甲)酸盐络合物, [L 2 SmCp*