期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 129, 期 48, 页码 15085-15090出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja076570h
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资金
- Engineering and Physical Sciences Research Council [EP/C526465/1, GR/T28645/01] Funding Source: researchfish
We report the design, synthesis, characterization, and operation of a [2]rotaxane in which a palladium-complexed macrocycle can be translocated between 4-dimethylaminopyridine and pyridine monodentate ligand sites via reversible protonation, the metal remaining coordinated to the macrocycle throughout. The substitution pattern of the ligands and the kinetic stability of the Pd-N bond means that changing the chemical state of the thread does not automatically cause a change in the macrocycle's position in the absence of an additional input (heat and/or coordinating solvent/anion). Accordingly, under ambient conditions any of the four sets of protonated and neutral, stable, and metastable co-conformers of the [2]rotaxane can be selected, manipulated, isolated, and characterized.
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