Heidecker Alexandra A, Stasi Michele, Spears Alexander, Boekhoven Job, Pöthig Alexander
Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Chair of Inorganic and Metal-Organic Chemistry, Catalysis Research Center (CRC), Ernst-Otto-Fischer-Straße 1, 85748, Garching, Germany.
Technical University of Munich, TUM School of Natural Sciences, Department of Chemistry, Chair of Supramolecular Chemistry Lichtenbergstraße 4, 85748, Garching, Germany.
Chempluschem. 2023 Nov;88(11):e202300234. doi: 10.1002/cplu.202300234. Epub 2023 Jul 19.
A series of pseudorotaxanes with supramolecular organometallic silver(I) and gold(I) pillarplexes acting as rings and different α,ω-dicarboxylic acids as axle components are reported. The successful formation of the host-guest complexes is shown by H NMR spectroscopy and respective NMR titration. Additional evaluation with ITC titration experiments yielded dissociation constants (K ) ranging from 10 to 10 M. Single-crystal X-Ray diffraction analysis reveals a particularly exciting pore alignment of different examples in the solid state depending on the length of the guest. The work highlights, that dicarboxylic acids can penetrate the tight tubular pillarplex pore, paving the way to future mechanically interlocked molecules and materials.
报道了一系列以超分子有机金属银（I）和金（I）柱状配合物为环，不同的α,ω-二羧酸为轴组分的准轮烷。通过核磁共振氢谱（¹H NMR）光谱和相应的核磁共振滴定表明了主客体配合物的成功形成。通过等温滴定量热法（ITC）滴定实验进行的进一步评估得出解离常数（Kd）范围为10⁻⁴至10⁻⁶ M。单晶X射线衍射分析揭示了根据客体长度，不同实例在固态下具有特别令人兴奋的孔排列。这项工作突出表明，二羧酸可以穿透紧密的管状柱状配合物孔，为未来的机械互锁分子和材料铺平了道路。
