Yim King-Him, Yeung Chi-Tung, Wong Melody Yee-Man, Probert Michael R, Law Ga-Lai
State Key Laboratory of Chemical Biology and Drug Discovery, Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University Hung Hom, Kowloon, Hong Kong), China.
Chemistry, School of Natural and Environmental Sciences, Newcastle University, Newcastle Upon Tyne, NE1 7RU, UK.
Chemistry. 2022 Oct 7;28(56):e202201655. doi: 10.1002/chem.202201655. Epub 2022 Aug 10.
Construction of lanthanide heterometallic complex is important for engineering multifunction molecular containers. However, it remains a challenge because of the similar ionic radii of lanthanides. Herein we attempt to prepare chiral lanthanide heterometallic tetrahedra. Upon crystallization with a mixture of [Eu L ] and [Ln L ] (Ln=Gd, Tb and Dy) helicates, a mixture of heterometallic Eu Ln' (L ) (n=0-4) tetrahedra was prepared. Selective formation of heterometallic tetrahedron was observed as MS deconvolution results deviated from statistical results. The formation of heterometallic tetrahedron was found to be sensitive to ionic radii as well as the ratio of the two helicates used in the crystallization.
镧系异金属配合物的构建对于设计多功能分子容器很重要。然而，由于镧系元素相似的离子半径，这仍然是一个挑战。在此，我们尝试制备手性镧系异金属四面体。在用[EuL]和[LnL]（Ln = Gd、Tb和Dy）螺旋配合物的混合物进行结晶时，制备了异金属EuLn'（L）（n = 0 - 4）四面体的混合物。由于质谱去卷积结果偏离统计结果，观察到了异金属四面体的选择性形成。发现异金属四面体的形成对离子半径以及结晶中使用的两种螺旋配合物的比例敏感。
