0000000000974975

AUTHOR

Kurt F. Hoffmann

0000-0002-5419-1741

showing 2 related works from this author

Dual-stimuli pseudorotaxane switches under kinetic control

2021

A series of dumbbell-shaped sec-ammonium salts with bulky (pseudo)stoppers (‘speed bumps’) were tested for their ability to form pseudorotaxanes with a redox-switchable, tetrathiafulvalene (TTF)-decorated [24]crown-8 ether. Depending on the size of the pseudostoppers, fast (less than ten minutes), slow (hours to days) and very slow (no pseudorotaxanes observed) threading has been observed. NMR spectroscopy as well as tandem mass spectrometry indicate the formation of non-threaded face-to-face complexes prior to pseudorotaxanes formation. Both isomers can be distinguished by their substantially different stability in collision-induced dissociation (CID) experiments. Two external stimuli affe…

Steric effectsMechanical bond010405 organic chemistryOrganic ChemistryEtherNuclear magnetic resonance spectroscopy547010402 general chemistry01 natural sciencesDissociation (chemistry)pseudostoppers0104 chemical scienceschemistry.chemical_compoundCrystallographyDeprotonationchemistrysec-ammonium salts500 Naturwissenschaften und Mathematik::540 Chemie::547 Organische ChemieMoietyTetrathiafulvalenepseudorotaxanes
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CCDC 2073308: Experimental Crystal Structure Determination

2021

Related Article: Marius Gaedke, Henrik Hupatz, Hendrik V. Schröder, Simon Suhr, Kurt F. Hoffmann, Arto Valkonen, Biprajit Sarkar, Sebastian Riedel, Kari Rissanen, Christoph A. Schalley|2021|Org.Chem.Front.|8|3659|doi:10.1039/D1QO00503K

Space GroupCrystallographyCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates2-[45-bis(methylsulfanyl)-2H-13-dithiol-2-ylidene]-56891112212224252728-dodecahydro-2H-[13]dithiolo[45-t]naphtho[23-h][1471013161922]hexaoxadithiacyclotetracosine
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