An unusual 3D 3d-4f heterometallic coordination polymer based on the linkages of Sm2(IN)6 pillars and 2D [Cu7Br6]nn+ layers: Crystal structure and luminescent property

► A novel 3D Sm-Cu coordination polymer based on 2D Cu-Br layers has been synthesized. ► CuBr2N triangles and CuBr3N tetrahedra construct the unprecedented 2D Cu-Br layer. ► This compound exhibits good luminescent property.