Synthesis, Characterization and Supramolecular Structure of Two New Isotypic Coordination Polymers: Poly-Bis(μ2-ethane-1,2-diyl bis(pyridine-3-carboxylate)κ2N,N′–Bis(aquo)-Copper(II)X2 (X = ClO4 −; NO3 −)

Abstract

Two novel coordination polymers, {[CuL2(H2O)2]X2}n, with L = ethane-1,2-diyl bis(pyridine-3-carboxylate) and X = ClO4 −; NO3 − have been prepared by self-assembly of Cu(II) salts with L in THF/H2O system. The IR, TGA, and the reflectance spectra in the solid state have been recorded, and both complexes were structurally characterized by X-ray crystallography confirming that the complexes are one-dimensional coordination isotypic polymers, and L acts in a μ2-N,N′-bidentate fashion to link Cu(II) cations to form a double-stranded chain along [001]. The main structural motifs difference between both compounds is related to supramolecular self-assembly.