A nanotubular 3D coordination polymer based on a 3d-4f heterometallic assembly

Abstract

Large pores comprising 48-membered rings characterize the isostructural lanthanide-transition-metal coordination polymers [{[Ln(dipic)3Mn1.5(H2O)3]· nH2O}∞], H2dipic = pyridine-2,6-dicarboxylic acid; Ln = Pr, n = 2 (shown here); Ln = Gd, n = 3.5; Ln = Er, n = 3. Many water molecules are trapped in the nanotubular structure, and the framework remains intact on removal of the uncoordinated water molecules.