Unprecedented hexagonal bipyramidal single-ion magnets based on metallacrowns
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Li, Quan-Wen
Wan, Rui-Chen
Chen, Yan-Cong
Liu, Jun-Liang
Wang, Long-Fei
Jia, Jian-Hua
Chilton, Nicholas F.
Tong, Ming-Liang
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Two novel Ln( iii ) (Ln = Ce or Nd) complexes based on [15-MC-6] (MC = metallacrown) and phosphine oxide are reported. Both of them feature a hexagonal bipyramidal LnO 8 geometry ( D 6h ) and behave as single-ion magnets. Two Ln( iii ) (Ln = Ce or Nd) complexes based on [15-MC-6] (MC = metallacrown) and phosphine oxide are reported for the first time with the Ln( iii ) ion featuring nearly perfect hexagonal bipyramidal LnO 8 geometry, with pseudo- D 6h symmetry. Magnetic measurements reveal that both behave as single-ion magnets (SIMs), where the slow relaxation is dominated by the Raman mechanism.
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Chemical Communications
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