Homoleptic Chiral Benzamidinate Complexes of Rare‐Earth Elements: Synthesis, Structure, Luminescence, and Magnetism
作者:Meng He、Zhi Chen、Eufemio Moreno Pineda、Xue Liu、Elisabeth Bouwman、Mario Ruben、Peter W. Roesky
DOI:10.1002/ejic.201600851
日期:2016.12
[(S)-NEBA] was introduced into the chemistry of the rare-earth elements. Firstly, the synthesis of the corresponding amidine [(S)-HNEBA] is described. Amine elimination reactions of (S)-HNEBA with [LnN(SiMe3)2}3] [Ln = Y (1), Sm (2), Tb (3), Dy (4), Er (5), Yb (6), Lu (7)] gave a series of enantiomerically pure homoleptic rare-earth metal complexes [Ln(S)-NEBA}3]. All complexes have a chiral metal center
新的对映纯脒(S,S)-N,N'-双[1-(2-萘基)乙基]苯甲脒[(S)-NEBA]被引入到稀土元素的化学中。首先,描述了相应脒 [(S)-HNEBA] 的合成。(S)-HNEBA 与 [LnN(SiMe3)2}3] [Ln = Y (1), Sm (2), Tb (3), Dy (4), Er (5), Yb 的胺消除反应(6), Lu (7)] 得到了一系列对映异构纯的均质稀土金属配合物 [Ln(S)-NEBA}3]。所有配合物都具有手性金属中心,但仅在两种可能的非对映异构体中形成了沿螺旋轴具有 Λ 构型的复合物。所有配合物和前配体的固态结构均通过单晶 XRD 建立。研究了2和3的发光特性和3-6的磁性。