“…However, high-nuclear Cu(II)-Dy(III) clusters were rarely reported. It is well known that the reported 4f and 3d-4f high-nuclear clusters present versatile aesthetic structures such as cage, 25,26 ring, 27,28 linear, [29][30][31][32] prism, [33][34][35] pancake, [36][37][38] dumbbell [39][40][41][42] and sphere motifs. [43][44][45] However, 3d-4f high-nuclear clusters with sheetlike skeletons are difficult to form probably due to the limitations from stability.…”