Title: A Uranium-Based UO2+ -Mn2+ Single-Chain Magnet Assembled Trough Cation-Cation Interactions
Authors: MOUGEL VictorCHATELAIN LucileHERMLE JohannesCACIUFFO RobertoCOLINEAU EricTUNA FlorianaMAGNANI NicolaDE GEYER ArnaudPÉCAUT JacquesMAZZANTI M.
Citation: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION vol. 53 no. 3 p. 819-823
Publisher: WILEY-V C H VERLAG GMBH
Publication Year: 2014
JRC N°: JRC84362
ISSN: 1433-7851
URI: http://onlinelibrary.wiley.com/doi/10.1002/anie.201307366/abstract
http://publications.jrc.ec.europa.eu/repository/handle/JRC84362
DOI: 10.1002/anie.201307366
Type: Articles in periodicals and books
Abstract: Single-chain magnets (SCMs) are materials composed of magnetically isolated one-dimensional (1D) units exhibiting slow relaxation of magnetization. The occurrence of SCM behavior requires the fulfillment of stringent conditions for exchange and anisotropy interactions. Herein, we report the synthesis, the structure, and the magnetic characterization of the first actinide-containing SCM. The 5f–3d heterometallic 1D chains [{[UO2(salen)(py)][M(py)4](NO3)}]n, (M=Cd (1) and M=Mn (2); py=pyridine) are assembled trough cation– cation interaction from the reaction of the uranyl(V) complex [UO2(salen)py][Cp*2Co] (Cp*=pentamethylcyclopentadienyl) with Cd(NO3)2 or Mn(NO3)2 in pyridine. The infinite UMn chain displays a high relaxation barrier of 1340.8 K (930.5 cm1), probably as a result of strong intra-chain magnetic interactions combined with the high Ising anisotropy of the uranyl(V) dioxo group. It also exhibits an open magnetic hysteresis loop
JRC Directorate:Nuclear Safety and Security

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