Enantioselective Self-Assembly of Triangular Dy<sub>3</sub>Clusters with Single-Molecule Magnet Behavior
作者:Shuang-Yan Lin、Chao Wang、Lang Zhao、Jinkui Tang
DOI:10.1002/asia.201402670
日期:2014.12
pairs of enantiopure chiral triangular Ln3 clusters, [Ln3LRRRRRR/SSSSSS(μ3‐OH)2(H2O)2(SCN)4]⋅xCH3OH⋅yH2O (R‐Dy3, Ln=Dy, x=6, y=0; S‐Dy3, Ln=Dy, x=6, y=1; R‐Ho3, Ln=Ho, x=6, y=1; S‐Ho3, Ln=Ho, x=6, y=1; R‐Er3, Ln=Er, x=6, y=0; S‐Er3, Ln=Er, x=6, y=1), have been successfully synthesized by a rational enantioselective synthetic strategy. The core of triangular Ln3 is bound in the central N6O3 of the macrocyclic
三对对映体纯的手性三角形LN的3簇,[LN 3大号RRRRRR / SSSSSS(μ 3 -OH)2(H 2 O)2(SCN)4 ]⋅ X CH 3 OH⋅ ý ħ 2 O(ř -Dy 3,Ln为镝,X = 6,ÿ = 0;小号-Dy 3,Ln为镝,X = 6,ÿ = 1; - [R -Ho 3,Ln为何,X = 6,ÿ = 1;小号-Ho3,Ln = Ho, x= 6, y= 1;R‐ Er 3,Ln = Er, x = 6, y = 0; S- Er 3,Ln = Er, x = 6, y = 1)已通过合理的对映选择性合成策略成功合成。三角形Ln的芯3结合在中央Ñ 6 ö 3的大环配位体的和Ln离子的配位层由四个SCN完成-阴离子和两个H 2大分子轴向位置上的O分子。对映异构体的圆二色性(CD)和振动圆二色性(VCD)光谱表明,手性已成功地从配体转移到生成的Ln 3团簇中。交流磁化率测量表明,R-