New lanthanide-based complexes constructed from cucurbit[6]uril: Synthesis, structures and properties

作者：Qiu, Xiumin; Wang, Xin; Hou, Shengzhen; Ma, Haili; Tan, Yebang^*

来源：Journal of Coordination Chemistry, 2018, 71(9): 1442-1459.

DOI：10.1080/00958972.2018.1463096

• Cucurbit[6]uril
• Ln-based complex
• X-ray crystallography

Three lanthanide-based complexes, {Gd-2(H2O)(10)(CB[6])(2)}CB[6]6Cl12H(2)O (1), {[Gd-2(H2O)(8)CB[6](2)](CuCl4)4Cl46H(2)O}(n) (2), and {Dy-2(NO3)(2)(H2O)(10)(CB[6])}4NO(3)14H(2)O (3) (CB[6] = cucurbit[6]uril), were prepared with cucurbit[6]uril (CB[6]). These complexes were characterized by single-crystal X-ray diffraction, elemental analysis, FT-IR spectroscopy, UV-Vis spectroscopy, thermogravimetric analysis and magnetization measurements. Crystallographic results showed that 1 and 3 are dinuclear and crystallize in the triclinic space group P, whereas 2 is a 1-D zigzag supramolecular chain that crystallizes in the monoclinic system in C2/c. The results indicated that temperature has a big effect on the supramolecular assemblies and a different structure inducer also leads to the formation of different coordination polymers. Frequency dependence in the ac susceptibility signals was observed in 3.

• 出版日期2018
• 单位山东大学