Crystal structure and luminescence of complexes of Eu(III) and Tb(III) with furan-2,5-dicarboxylate

Four new Ln(III) complexes (Ln = Eu, Tb) with furan-2,5-dicarboxylic acid (H2FDA) as a ligand have been synthesized and characterized in the solid state. Luminescence studies indicate that the compounds exhibit line-like luminescence characteristic of the lanthanide centre upon excitation in the ligand absorption bands. Single crystal X-ray diffraction study of {[Eu(FDA)(H2O)5]·½(FDA)·3H2O}n shows the formation of an inorganic polymer with infinite Eu-FDA chains.