【无机化学学报】doi: 10.11862/CJIC.20230411
Employing the reaction of chiral nitronyl nitroxide radical and rare-earth ions, two 2p-4f hetero-spin meso complexes [Ln(hfac)3((R)-MePP-Ph-NIT)]2, where Ln=Eu (1) and Dy (2), hfac=hexafluoroacetylacetone; (R)-MePP-Ph-NIT=2-(4-((R)-tert-butyl-2-methylpiperazine-1-carboxylate)phenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide, have been assembled. In both complexes, two chiral radicals ligate to two Ln(Ⅲ) ions to produce a cyclic dinuclear structure. Complex 1 shows the characteristic fluorescence emission of the Eu(Ⅲ) ion. In complex 2, the frequency-dependent out-of-phase susceptibility signals connected with magnetic relaxation confirm single-molecule magnet (SMM) behavior.
