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Magnetic relaxation and luminescent behavior in nitronyl nitroxide-based annuluses of rare-earth ions
Author NameAffiliationE-mail
LI Hongdao Taiyuan Institute of Technology, Department of Chemistry and Chemical Engineering, Taiyuan 030008, China lihong.dao@163.com 
ZHANG Shengjian Taiyuan Institute of Technology, Department of Chemistry and Chemical Engineering, Taiyuan 030008, China  
DONG Hongmei Taiyuan Institute of Technology, Department of Chemistry and Chemical Engineering, Taiyuan 030008, China  
Abstract: 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)-MePPPh-NIT=2-(4-((R)-tert-butyl-2-methylpiperazine-1-carboxylate)phenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3oxide, 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.
Keywords: nitronyl nitroxide  single-molecule magnet  rare-earth ion  2p-4f hetero-spin
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LI Hongdao,ZHANG Shengjian,DONG Hongmei.Magnetic relaxation and luminescent behavior in nitronyl nitroxide-based annuluses of rare-earth ions[J].Chinese Journal of Inorganic Chemistry,2024,40(5):972-978.
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Chinese Journal of Inorganic Chemistry