A switchable palladium-complexed molecular shuttle and its metastable positional isomers

Crowley, J.D., Leigh, D.A., Lusby, P.J., McBurney, R.T., Perret-Aebi, L., Petzold, C., Slawin, A.M.Z. and Symes, M.D. (2007) A switchable palladium-complexed molecular shuttle and its metastable positional isomers. Journal of the American Chemical Society, 129(48), pp. 15085-15090. (doi:10.1021/ja076570h)

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Abstract

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.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Symes, Dr Mark
Authors: Crowley, J.D., Leigh, D.A., Lusby, P.J., McBurney, R.T., Perret-Aebi, L., Petzold, C., Slawin, A.M.Z., and Symes, M.D.
Subjects:Q Science > QD Chemistry
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Journal of the American Chemical Society
ISSN:0002-7863
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