Search results for "I...π interaction"

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Solution and solid-state studies on the halide binding affinity of perfluorophenyl-armed uranyl–salophen receptors enhanced by anion–π Interactions

2016

The enhancement of the binding between halide anions and a Lewis acidic uranyl-salophen receptor has been achieved by the introduction of pendant electron- deficient arene units into the receptor skeleton. The association and the occurrence of the elusive anion-p interaction with halide anions (as tetrabutylammonium salts) have been demonstrated in solution and in the solid state, providing unambiguous evidence on the interplay of the concerted interactions responsible for the anion binding.

anion–π interactions; halides; host–guest systems; lewis acid–base interactions; uranyl–salophen; chemistry (all)Solid-stateHalide010402 general chemistry01 natural sciencesCatalysisIonUranyl salophenPolymer chemistryOrganic chemistryReceptorAnion bindingta116Uranyl-salphenlewis acid–base interactionsanion–π interactionsuranyl–salophen010405 organic chemistryChemistryOrganic Chemistryhost–guest systemsGeneral Chemistryinteractions0104 chemical sciencesuranyl-salophen receptorshalideschemistry (all)halide recognitionanions
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Crystal structure of 4-{2-[4-(di­methyl­amino)­phen­yl]diazen-1-yl}-1-methyl­pyridinium iodide

2015

The molecular geometry of the ionic title compound, C14H17N4+·I−or DAZOP+·I−, is essentially featureless. Regarding the crystal structure, in addition to the obvious cation–anion Coulombic interactions, the packing is mostly directed by non-covalent interactions involving both ring systems, as well as the iodide anion. It consists of cationic molecules aligned along [101] and disposed in an antiparallel fashion while linked into π-bonded dimeric entities by a stacking contact involving symmetry-related phenyl rings, with a centroid–centroid distance of 3.468 (3) Å and a slippage of 0.951 Å. The dimers are, in addition, sustained by a number of C—H...I and I...π (I...centroid = 3.876 Å) inte…

crystal structureC—H⋯ π inter­actionsIodideStackingIonic bondingNanotechnologyCrystal structureRing (chemistry)NLOlcsh:Chemistrychemistry.chemical_compoundGeneral Materials SciencePi interactionI⋯π inter­action[DAZOP+][I−]chemistry.chemical_classificationdyeChemistryCrystal structureCationic polymerizationGeneral ChemistryCondensed Matter PhysicsC—H... π interactionsData ReportsI...π interactionCrystallographyπ–π inter­actionlcsh:QD1-999π–π interactionPyridinium
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