Department of Chemistry, Renmin University of China, No. 59, Zhongguan Street, Beijing 100872, China.
College of Chemistry, Beijing Normal University, No. 19, Xinwai Street, Beijing 100875, China.
Molecules. 2021 Jul 13;26(14):4241. doi: 10.3390/molecules26144241.
The metal-organic rotaxane framework (MORF) structures with the advantage of mechanically interlocking molecules (MIMs) have attracted intense interest from the chemical community. In this study, a set of MORFs (i.e., MORF-Pb-1 and MORF-Pb-2) are constructed using Pb, a tetraimidazolium macrocycle (Texas-sized molecular box; ), and aromatic dicarboxylate (-phthalate dianions (PTADAs; ) or 2,6-naphthalene dicarboxylate dianions ()) via a one-pot three-layer diffusion protocol. In particular, an unusual Pb…Pb weak interaction was shown in MORF-Pb-1 (charactered with distance of 3.656 Å).
具有机械互锁分子（MIMs）优势的金属-有机轮烷框架（MORF）结构引起了化学界的浓厚兴趣。在这项研究中，通过一锅三层扩散法，使用 Pb、四咪唑大环（Texas 大小的分子盒；）和芳香二羧酸酯（-对苯二甲酸二阴离子（PTADAs；）或 2,6-萘二酸二阴离子（））构建了一组 MORFs（即 MORF-Pb-1 和 MORF-Pb-2）。特别是，在 MORF-Pb-1 中显示了一种不寻常的 Pb…Pb 弱相互作用（特征距离为 3.656 Å）。
