Two Isostructural 3D Lanthanide Coordination Networks (Ln = Gd³⁺, Dy³⁺) with Squashed Cuboid-Type Nanoscopic Cages Showing Significant Cryogenic Magnetic Refrigeration and Slow Magnetic Relaxation

Two isostructural lanthanide-based 3D coordination networks [Ln = Gd3+ (1), Dy3+(2)] with densely packed distorted cuboid nanoscopic cages are reported for the first time. Magnetic characterization reveals that complex 1 shows a significant cryogenic magnetocaloric effect (−ΔSm = 44 J kg–1 K–1), whereas 2 shows slow relaxation of magnetization.首次报道了两例同构的镧系基三维配位网络[Ln = Gd³⁺(1)、Dy³⁺(2)]，其结构中存在密堆积的扭曲立方体形纳米尺度笼状结构。磁学表征结果显示，配合物1呈现出显著的低温磁热效应（−ΔSm = 44 J·kg⁻¹·K⁻¹），而配合物2则表现出磁化慢弛豫行为。