A uranium-based UO2+-Mn2+ single-chain magnet assembled trough cation-cation interactions

Victor Mougel, Lucile Chatelain, Johannes Hermle, Roberto Caciuffo, Eric Colineau, Floriana Tuna, Nicola Magnani, Arnaud De Geyer, Jacques Pécaut, Marinella Mazzanti

    Research output: Contribution to journalArticlepeer-review


    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 134±0.8 K (93±0.5 cm-1), 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 at T
    Original languageEnglish
    Pages (from-to)819-823
    Number of pages4
    JournalAngewandte Chemie - International Edition
    Issue number3
    Publication statusPublished - 2014


    • actinides
    • cations
    • polymetallic complexes
    • single-chain magnets
    • uranium


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