6533b857fe1ef96bd12b3c0a
RESEARCH PRODUCT
Size‐Selective Encapsulation of Hydrophobic Guests by Self‐Assembled M 4 L 6 Cobalt and Nickel Cages
Jonathan R. NitschkeChandan GiriAntti MinkkinenTanya K. RonsonFilip TopićJulian J. HolsteinN. Kodiah BeyehKari Rissanensubject
010405 organic chemistryOrganic ChemistryInorganic chemistrySupramolecular chemistrychemistry.chemical_elementmacromolecular substancesGeneral ChemistryNuclear magnetic resonance spectroscopy010402 general chemistry01 natural sciencesCatalysis0104 chemical sciencesMetalBond lengthCrystallographyNickelchemistryTransition metalvisual_artvisual_art.visual_art_mediumMoleculeta116Cobaltdescription
Subtle differences in metal-ligand bond lengths between a series of [M(4)L(6)](4-) tetrahedral cages, where M = Fe(II), Co(II), or Ni(II), were observed to result in substantial differences in affinity for hydrophobic guests in water. Changing the metal ion from iron(II) to cobalt(II) or nickel(II) increases the size of the interior cavity of the cage and allows encapsulation of larger guest molecules. NMR spectroscopy was used to study the recognition properties of the iron(II) and cobalt(II) cages towards small hydrophobic guests in water, and single-crystal X-ray diffraction was used to study the solid-state complexes of the iron(II) and nickel(II) cages.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-10-19 | Chemistry – A European Journal |