Three Ln(III)-2,3,5-trichlorobenzoate coordination polymers (Ln = Tb, Ho and Er): Syntheses, structures and magnetic properties

Three novel lanthanide polymers, [Ln(III)(L)(3)EtOH](n) (Ln = Tb(1), Ho(2), Er(3), HL = 2,3,5-trichlorobenzoic acid), have been solvothermal synthesized and characterized by single-crystal X-ray diffraction, infrared spectroscopy and element analyses. The three polymers crystallize in triclinic space group P-1. The Ln(III) ions are in turn bridged by double and quadruple carboxylate of L- ligands to form one-dimensional (1D) chains. Magnetic studies reveal that polymer 1 demonstrates dominant ferromagnetic behavior, polymer 2 shows anti-ferromagnetic behavior, and polymer 3 present spin-canting behavior. (C) 2015 Elsevier B.V. All rights reserved.