NDLI: Single-molecule magnets based on rare earth complexes with chelating benzimidazole -substituted nitronyl nitroxide radicals

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Ma, Yue Zhu, Mei Hu, Peng Tian, Haixia Li, Licun Mei, Xuelan Liao, Daizheng
Description	Author Affiliation: Hu P ( Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry, Nankai University, Tianjin 300071, PR China.)
Abstract	Three rare earth–nitronyl nitroxide radical complexes $[Ln(tfa)_{3}(NIT-BzImH)]$ (Ln(III) = Gd 1, Tb 2, Dy 3; tfa = trifluoroacetylacetonate; NIT-BzImH = 2-(2′-benzimidazolyl)-4,4,5,5-tetramethylimidazolyl-1-oxyl-3-oxide) have been successfully prepared and structurally characterized. X-Ray crystallographic analysis reveals that all three complexes are isomorphous. Their crystal structures consist of mononuclear molecule units in which lanthanide(III) is 8-coordinated to one NIT-BzImH and three trifluoroacetylacetonate ligands . The NIT-BzImH acts as a bidentate ligand via its nitrogen atom of the imidazole ring and the oxygen atom of the N–O group. The magnetic properties of complexes 1–3 were studied. All the three complexes exhibit ferromagnetic Ln(III)–radical coupling. AC magnetic susceptibility studies of 2 and 3 show slow magnetic relaxation suggesting that they behave as SMMs.
ISSN	14779226
Issue Number	48
Journal	Dalton Trans.
Volume Number	41
e-ISSN	13645447
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2012-12-28
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

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