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Pb<sup>2+</sup>-Containing Metal-Organic Rotaxane Frameworks (MORFs)
oleh: Ting Xia, Zhi-Yong Yu, Han-Yuan Gong
Format: | Article |
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Diterbitkan: | MDPI AG 2021-07-01 |
Deskripsi
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<sup>2+</sup>, a tetraimidazolium macrocycle (Texas-sized molecular box; <b>1<sup>4+</sup></b>), and aromatic dicarboxylate (<i>p</i>-phthalate dianions (PTADAs; <b>2</b>) or 2,6-naphthalene dicarboxylate dianions (<b>3</b>)) 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).