Jump to main content
Jump to site search


Single molecule magnet behavior and magnetic refrigeration of four tetranuclear lanthanide (Ln = GdIII, TbIII, DyIII) clusters

Author affiliations

Abstract

Four tetranuclear lanthanide clusters: {[Gd4(L1)6(tmhd)43-OH)2]·2CH3CN} (1), {[Tb4(L1)6(tmhd)43-OH)2]·4CH3CN} (2), {[Dy4(L1)6(tmhd)43-OH)2]·CH3CN} (3) and {[Gd4(L2)6(tmhd)43-OH)2]·8CH3CN·2CH2Cl2} (4) were fabricated by employing two Schiff based ligands (HL1 = 5-((4-ethylbenzylidene)amino)quinolin-8-ol and HL2 = 5-(([1,1′-biphenyl]-4-ylmethylene)amino)quinolin-8-ol). Interestingly, the cores of compounds 1–4 are nearly structurally identical. The core of the compounds contains a tetranuclear arrangement of LnIII ions, which is held together by two pyramidal μ3-OH ions and six μ2 phenol hydroxyl oxygen atoms derived from six ligands. Magnetic studies indicated that 1 and 4 exhibit a cryogenic magnetic refrigeration property (maximum −ΔSm = 18.02 J K−1 kg−1 for 1, and 15.47 J K−1 kg−1 for 4, ΔH = 7 T at 2.0 K), whereas compound 3 exhibits a slow relaxation of magnetization with an energy barrier (Ueff/kB) of 83.1 K and τ0 = 4.18 × 10−8 s.

Graphical abstract: Single molecule magnet behavior and magnetic refrigeration of four tetranuclear lanthanide (Ln = GdIII, TbIII, DyIII) clusters

Back to tab navigation

Supplementary files

Publication details

The article was received on 17 Aug 2019, accepted on 19 Nov 2019 and first published on 20 Nov 2019


Article type: Paper
DOI: 10.1039/C9NJ04260A
New J. Chem., 2019, Advance Article

  •   Request permissions

    Single molecule magnet behavior and magnetic refrigeration of four tetranuclear lanthanide (Ln = GdIII, TbIII, DyIII) clusters

    H. Yu, J. Cao, J. Zhang, R. Li, Y. Cheng, C. Yang, Y. Hou and M. Fang, New J. Chem., 2019, Advance Article , DOI: 10.1039/C9NJ04260A

Search articles by author

Spotlight

Advertisements