AI Article Synopsis
- The study completes the structural comparison of three anion-binding double-cages, focusing on the sulfone derivative through X-ray single crystal analysis.
- The three palladium cages exist together in solution because ligand exchange happens slowly, leading to a mix when combined with Pd(II).
- In contrast, when mixing one ligand with a shorter version, self-assembly occurs, resulting in a double-cage and a small monomeric cage, independent of mixing order.
Article Abstract
Previously, we introduced a series of anion-binding interpenetrated double-cages based on phenothiazine and its mono- and di-S-oxygenated derivatives. Here, we complete the structural comparison of the three related assemblies by an X-ray single crystal analysis of the sulfone derivative. We further show that the three palladium cages coexist in solution upon post-assembly mixing due to the very slow ligand exchange whereas treatment of binary mixtures of the corresponding ligands with Pd(II) leads to the formation of mixed cages comprising a statistical ligand distribution. In contrast, mixtures of one of these ligands with a shorter ligand derivative lead to narcissistic self-assembly into a double-cage and a coexisting small monomeric cage, regardless of the order of mixing and Pd(II) addition.
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| http://dx.doi.org/10.1039/c3dt53243g | DOI Listing |
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