Search results for "electron-deficient"

showing 4 items of 4 documents

Electron-deficient trifluoromethyl-substituted sub-components affect the properties of M4L4 tetrahedral cages

2017

Two supramolecular tetrahedral cages based on a new electron-deficient trifluoromethyl-substituted pyridylimine ligand are synthesised by sub-component self-assembly. Their structures are characterised by NMR und UV-Vis spectroscopy, high-resolution mass spectrometry and single crystal X-ray diffraction. The iron(II) complex shows host–guest chemistry, complex-to-complex transformations and novel electronic properties.

DiffractionTrifluoromethyl010405 organic chemistryLigandSupramolecular chemistry010402 general chemistryMass spectrometry01 natural sciences0104 chemical sciencesInorganic ChemistryCrystallographychemistry.chemical_compoundchemistryelectron-deficient trifluoromethyl-substituted sub-componentsTetrahedronSpectroscopyta116Single crystalDalton Transactions
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Spontaneous Resolution of an Electron‐Deficient Tetrahedral Fe4L4cage

2015

A highly electron-deficient C3-symmetric tris(bipyridyl) ligand was prepared in four steps and used for the coordination of Fe(OTf)2, thereby resulting in the homochiral assembly of a new family of robust tetrahedral M4L4 cages. This homochiral T-symmetric cage containing a relatively large cavity of 330 A(3) is capable of encapsulating an anionic guest, as was determined by mass spectrometry, (19)F NMR spectroscopy, and finally shown from its crystal structure. Moreover, crystallization of the cage from CH3CN led to crystals containing both (ΔΔΔΔ and ΛΛΛΛ) enantiomers, while crystallization from CH3 OH resulted in crystals containing only the right-handed (ΔΔΔΔ) cage. The difference in the…

crystallization010405 organic chemistryChemistryLigandelectron-deficient tetrahedral Fe4L4Supramolecular chemistryGeneral ChemistryNuclear magnetic resonance spectroscopyCrystal structureGeneral Medicine010402 general chemistry01 natural sciencesCatalysis0104 chemical scienceslaw.inventionCrystalCrystallographylawX-ray crystallographyCrystallizationChirality (chemistry)ta116Angewandte Chemie
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Electron-deficient trifluoromethyl-substituted sub-components affect the properties of M4L4 tetrahedral cages

2017

Two supramolecular tetrahedral cages based on a new electron-deficient trifluoromethyl-substituted pyridylimine ligand are synthesised by sub-component self-assembly. Their structures are characterised by NMR und UV-Vis spectroscopy, high-resolution mass spectrometry and single crystal X-ray diffraction. The iron(II) complex shows host–guest chemistry, complex-to-complex transformations and novel electronic properties. peerReviewed

electron-deficient trifluoromethyl-substituted sub-components
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The pentafluorophenyl group as π-acceptor for anions: a case study

2015

Chemical science 6(1), 354-359 (2015). doi:10.1039/C4SC02762K

positive chargesChemistryStereochemistryChemieSolid-stateGeneral Chemistryhapticities540side-chainsstructural dataAcceptor3. Good healthIonevaluation criteriakey elementsComputational chemistryGroup (periodic table)pentafluorophenylddc:540HapticitySide chainStatistical analysiselectron-deficientta116Chemical Science
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