1000591-73-0Relevant academic research and scientific papers
An Inhospitable Cryptand: The Importance of Conformational Freedom in Host-Guest Complexation
Gibson, Harry W.,Huang, Feihe,Zhao, Run,Shao, Li,Zakharov, Lev N.,Slebodnick, Carla,Rheingold, Arnold L.
, p. 3472 - 3479 (2019)
Two new cryptands were synthesized from bis(5-bromomethyl-1,3-phenylene)-32-crown-10 (4). The third arms, containing 19 or 21 atoms, were installed via Williamson ether syntheses with bisphenols containing 2,6-disubstituted pyridines. 2,6-Diaminopyridine
Controlling Ligand Exchange through Macrocyclization
Carta, Veronica,Mehr, S. Hessam M.,Maclachlan, Mark J.
, p. 3243 - 3253 (2018)
Ligand exchange at a sterically hindered palladium center was investigated for six different ligands. The palladium atom was coordinated to a tridentate, NNN pincer bis(amido)pyridine macrocycle to produce a square-planar complex, in which an acetonitrile molecule occupies one of the coordination sites. Kinetic studies showed that ligand exchange at the palladium center proceeds through an associative mechanism and, as a consequence, is impeded by the small size of the metallomacrocycle cavity. The ligand-exchange rate on the palladium center between acetonitrile and six different ligands has been investigated and compared to the exchange rate on the corresponding open form. Our results demonstrate that macrocyclization of ligands is a way to modify the rate of guest exchange in a square-planar metal complex.
A switchable palladium-complexed molecular shuttle and its metastable positional isomers
Crowley, James D.,Leigh, David A.,Lusby, Paul J.,McBurney, Roy T.,Perret-Aebi, Laure-Emmanuelle,Petzold, Christiane,Slawin, Alexandra M. Z.,Symes, Mark D.
, p. 15085 - 15090 (2008/09/17)
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 rem
