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Issue 47, 2018
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Facile and environmentally friendly synthesis of six heterometallic dumbbell-shaped MII5LnIII4 (M = Co, Ni; Ln = Eu, Gd, Dy) clusters as cryogenic magnetic coolants and molecular magnets

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Abstract

Six analogous dumbbell-shaped 3d–4f complexes MII5LnIII4 were obtained by the reaction of Ln(NO3)3 (Ln = Eu, Gd, Dy) and M(OAc)2 (M = Co, Ni) without any other organic ligands, and M5Gd4 exhibited a large magnetocaloric effect (−ΔSm = 31.0, 37.3 J kg−1 K−1 for Co5Gd4 and Ni5Gd4 respectively), while M5Dy4 and Co5Eu4 showed single molecule magnet behaviour. To the best of our knowledge, Co5Eu4 is the first Eu-based cluster to display single molecule magnet behaviour (Ueff = 16.4 K).

Graphical abstract: Facile and environmentally friendly synthesis of six heterometallic dumbbell-shaped MII5LnIII4 (M = Co, Ni; Ln = Eu, Gd, Dy) clusters as cryogenic magnetic coolants and molecular magnets

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Publication details

The article was received on 17 Oct 2018, accepted on 14 Nov 2018 and first published on 19 Nov 2018


Article type: Communication
DOI: 10.1039/C8DT04153A
Citation: Dalton Trans., 2018,47, 16850-16854
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    Facile and environmentally friendly synthesis of six heterometallic dumbbell-shaped MII5LnIII4 (M = Co, Ni; Ln = Eu, Gd, Dy) clusters as cryogenic magnetic coolants and molecular magnets

    F. Shao, J. Zhuang, M. Chen, N. Wang, H. Shi, J. Tong, G. Luo, J. Tao and L. Zheng, Dalton Trans., 2018, 47, 16850
    DOI: 10.1039/C8DT04153A

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