Altering the solubility of metal–organic polyhedra via pendant functionalization of Cp3Zr3O(OH)3 nodes
The chemistry of zirconium-based metal-organic polyhedra (ZrMOPs) is often limited by their poor solubilities. Despite their attractive features—including high yielding and facile syntheses, predictable topologies, high stability, and tunability—problematic solubilities have caused ZrMOPs to be unde...
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| Veröffentlicht in: | Dalton transactions : an international journal of inorganic chemistry 2023-01, Vol.52 (2), p.338-346 |
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| creator | Sullivan, Meghan G Sokolow, Gregory E Jensen, Eric T Crawley, Matthew R MacMillan, Samantha N Cook, Timothy R |
| description | The chemistry of zirconium-based metal-organic polyhedra (ZrMOPs) is often limited by their poor solubilities. Despite their attractive features—including high yielding and facile syntheses, predictable topologies, high stability, and tunability—problematic solubilities have caused ZrMOPs to be under-studied and under-applied. Although these cages have been synthesized with a wide variety of carboxylate-based bridging ligands, we explored a new method for ZrMOP functionalization via node-modification, which we hypothesized could influence solubility. Herein, we report ZrMOPs with benzyl-, vinylbenzyl-, and trifluoromethylbenzyl-pendant groups decorating cyclopentadienyl moieties. The series was characterized by 1H/19F NMR, high-resolution mass spectrometry, infrared spectroscopy, and single-crystal X-ray diffraction. The effects of node functionalities on ZrMOP solubility were quantified using inductively coupled plasma mass spectrometry. Substitution caused a decrease in water solubility, but for certain organic solvents, e.g. DMF, solubility could be enhanced by ∼20×, from 16 μM for the unfunctionalized cage to 310 μM for the vinylbenzyl- and trifluoromethylbenzyl-cages. |
| doi_str_mv | 10.1039/d2dt03401h |
| format | Article |
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Despite their attractive features—including high yielding and facile syntheses, predictable topologies, high stability, and tunability—problematic solubilities have caused ZrMOPs to be under-studied and under-applied. Although these cages have been synthesized with a wide variety of carboxylate-based bridging ligands, we explored a new method for ZrMOP functionalization via node-modification, which we hypothesized could influence solubility. Herein, we report ZrMOPs with benzyl-, vinylbenzyl-, and trifluoromethylbenzyl-pendant groups decorating cyclopentadienyl moieties. The series was characterized by 1H/19F NMR, high-resolution mass spectrometry, infrared spectroscopy, and single-crystal X-ray diffraction. The effects of node functionalities on ZrMOP solubility were quantified using inductively coupled plasma mass spectrometry. 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| ispartof | Dalton transactions : an international journal of inorganic chemistry, 2023-01, Vol.52 (2), p.338-346 |
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| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Cages Chemistry Inductively coupled plasma mass spectrometry INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY Mass spectrometry NMR Nuclear magnetic resonance Polyhedra Single crystals Solubility Spectroscopy Topology Zirconium |
| title | Altering the solubility of metal–organic polyhedra via pendant functionalization of Cp3Zr3O(OH)3 nodes |
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