TY - JOUR
T1 - A switchable palladium-complexed molecular shuttle and its metastable positional isomers
AU - Crowley, James D.
AU - Leigh, David A.
AU - Lusby, Paul J.
AU - McBurney, Roy T.
AU - Perret-Aebi, Laure Emmanuelle
AU - Petzold, Christiane
AU - Slawin, Alexandra M Z
AU - Symes, Mark D.
PY - 2007/12/5
Y1 - 2007/12/5
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=36849067030&partnerID=8YFLogxK
U2 - 10.1021/ja076570h
DO - 10.1021/ja076570h
M3 - Article
C2 - 17990887
AN - SCOPUS:36849067030
SN - 0002-7863
VL - 129
SP - 15085
EP - 15090
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 48
ER -