Crystal structure and characterization of a new one-dimensional copper(II) coordination polymer containing a 4-aminobenzoic acid ligand

A CuII coordination polymer, catena-poly[[[aquacopper(II)]-bis( μ -4-aminobenzoato)- κ 2N:O; κ 2O:N] monohydrate], {[Cu(pABA)2(H2O)] · H2O}n (pABA = p-aminobenzoate, C7H4NO2 − ), was synthesized and characterized. It exhibits a one-dimensional chain structure extended into a three-dimensional supramolecular assembly through hydrogen bonds and π – π interactions. While the twinned crystal shows a metrically orthorhombic lattice and an apparent space group Pbcm, the true symmetry is monoclinic (space group P2/c), with disordered Cu atoms and mixed roles of water molecules (aqua ligand/crystallization water). The luminescence spectrum of the complex shows an emission at 345   nm, cf. 349   nm for pABAH.

Source: Acta Crystallographica Section E - February 20, 2024 Category: Chemistry Authors: Gogia, A. Novikov, E.M. Guzei, I.A. Fonari, M.S. Timofeeva, T.V. Tags: 4-aminobenzoic acid pABAH one-dimensional coordination polymer crystal structure research communications Source Type: research