6533b7d6fe1ef96bd1265d2c
RESEARCH PRODUCT
Tetrameric and Dimeric [N∙∙∙I+∙∙∙N] Halogen-Bonded Supramolecular Cages
Samu ForsblomLotta TurunenAnssi PeuronenKari RissanenElina KaleniusManu Lahtinensubject
Steric effectssupramolecular cagesHalogen bond010405 organic chemistryStereochemistryLigandOrganic Chemistryhalogen bondsCationic polymerizationSupramolecular chemistryGeneral Chemistry010402 general chemistry01 natural sciencesCatalysis0104 chemical scienceschemistry.chemical_compoundCrystallographychemistryHalogenHalonium ionta116Octanedescription
Tripodal N-donor ligands are used to form halogen-bonded assemblies via structurally analogous Ag+-complexes. Selective formation of discrete tetrameric I6L4 and dimeric I3L2 halonium cages, wherein multiple [N∙∙∙I+∙∙∙N] halogen bonds are used in concert, can be achieved by using sterically rigidified cationic tris(1-methyl-1-azonia-4-azabicyclo[2.2.2]octane)-mesitylene ligand, L1(PF6)3, and flexible ligand 1,3,5-tris(imidazole-1-ylmethyl)-2,4,6-trimethylbenzene, L2, respectively. The iodonium cages, I6L14(PF6)18 and I3L22(PF6)3, were obtained through the [N∙∙∙Ag+∙∙∙N] → [N∙∙∙I+∙∙∙N] cation exchange reaction between the corresponding Ag6L14(PF6)18 and Ag3L22(PF6)3 coordination cages, prepared as intermediates, and I2. The synthesized metallo- and halonium cages were studied in solution by NMR, in gas phase by ESI-MS and in the solid-state by single crystal X-ray diffraction.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-07-27 | Chemistry: A European Journal |