期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 28, 期 56, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202201655
关键词
cage compounds; helicate-to-tetrahedron transformation; lanthanides; supramolecular chemistry
资金
- Hong Kong Research Grants [PolyU153009/19P]
- State Key Laboratory of Chemical Biology and Drug Discovery
- Hong Kong Polytechnic University (University Research Facility in Chemical and Environmental Analysis (UCEA))
- Hong Kong Polytechnic University ( University Research Facility in Life Sciences (ULS))
- National Natural Science Foundation of China (NSFC) [21875201]
Construction of chiral lanthanide heterometallic tetrahedra was achieved by crystallization of a mixture of [Eu2L3] and [Ln(2)L(3)] (Ln=Gd, Tb and Dy) helicates. Selective formation of heterometallic tetrahedron was observed due to the sensitivity to ionic radii and the ratio of the two helicates used in the crystallization.
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 [Eu2L3] and [Ln(2)L(3)] (Ln=Gd, Tb and Dy) helicates, a mixture of heterometallic Eu(n)Ln'(4-n)(L-6) (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.
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