A new family of interdimer [Mn(2)(II)Ln(2)(III)](2) clusters: Syntheses, structures, and magnetic properties

作者：Sun, Lei; Chen, Hui; Ma, Chengbing; Chen, Changneng^*

来源：Inorganic Chemistry Communications, 2016, 70: 132-135.

DOI：10.1016/j.inoche.2016.06.005

• Mn/Ln clusters
• Magnetic caloric effect
• Single molecule magnets

A new family of isostructural Mn/Ln clusters: [Mn(2)(II)Ln(2)(III)](2)(hmp)(6)(NO3)(4)(CH3OH)(2)][Mn(2)(II)Ln(2)(III)](2)(hmp)(6)(NO3)(4)(H2O)(2)] ([Ln = Gd (1), Tb(2), Dy(3), hmpH = 2-(hydroxymethyl)pyridine]) have been synthesized by the reaction of Mn(NO3)(2) and Ln(NO3)(3)center dot 6H(2)O with hmpH as ligand under solvothermal conditions. Compounds 1-3 are isostructural and possess butterfly core. That the antiferromagnetic interactions within compounds 1-3 were suggested by soild-state dc magnetic susceptibility analyses. Compound 1 displays a magnetic-caloric effect (MCE) with 21.91 J Kg(-1) K-1 of the entropy change at 5 K for Delta H = 8 T. Compounds 2 and 3 exhibit frequency-dependent ac susceptibility signals suggestive of slow magnetic relaxation.

• 出版日期2016-8
• 单位中国科学院大学; 中国科学院福建物质结构研究所