6533b871fe1ef96bd12d264d

RESEARCH PRODUCT

3d/4f Sandwich Complex Based on Metallacrowns.

Andreas RauguthAlexander KredelEva RentschlerLuca M. Carrella

subject

Inorganic ChemistryLanthanideMagnetic measurementsNickelCrystallographyCoordination sphereZero fieldChemistrychemistry.chemical_elementPhysical and Theoretical ChemistryMetallacrownIon

description

A novel lanthanide double-decker complex with nickel metallacrowns (MCs) as coordinating ligands has been synthesized. In the 3d/4f metallacrown complex TbIII[12-MCNiIIN(shi)-4]2, the central lanthanide ion is sandwiched between two [12-MC-4] units, forming an almost ideal square-antiprismatic coordination sphere. The resulting zenithal angles at the central lanthanide ion are smaller than those for previously reported sandwich compounds. Magnetic measurements reveal an energy barrier of 346 K under zero field and up to 585 K under 3200 Oe, the highest reported for metallacrowns with D4d symmetry.

10.1021/acs.inorgchem.1c01356https://pubmed.ncbi.nlm.nih.gov/34463493