Abstract
Two new Gd2 compounds having formulae, [Gd2(hfac)4(L1)2] (1) and [Gd2(hfac)4(L2)2] (2) (hfac=hexafluoroacetylacetonate, HL1=2-[4-methylaniline-imino]methyl]-8-hydroxyquinoline and HL2=2-[(3,4-dimethylaniline)-imino]methyl]-8-hydroxyquinoline), have been successfully synthesized via applying two different 8-hydroxyquinoline Schiff base ligands, and further characterized by crystallography. Structural analysis shows that both of 1 and 2 are phenoxo-O bridged dinuclear complexes. The magnetic study reveal that 1 and 2 display cryogenic magnetic refrigeration properties with maximum −ΔSm=17.66Jkg−1K−1 at 2K and 7T for 1 and −ΔSm=14.81Jkg−1K−1 at 3K and 7T for 2.
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