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

Abstract

Two isostructural lanthanide-based 3D coordination networks [Ln = Gd³⁺ (<b>1</b>), Dy³⁺(<b>2</b>)] with densely packed distorted cuboid nanoscopic cages are reported for the first time. Magnetic characterization reveals that complex <b>1</b> shows a significant cryogenic magnetocaloric effect (−Δ<i>S</i>_m = 44 J kg^–1 K^–1), whereas <b>2</b> shows slow relaxation of magnetization