Paper Title
Synthesis and Characterization of Coordination Polymer of Europium with 2-Aminoterepthalic Acid as Linker

3D Coordination polymer of europium (III) with 2-Aminoterepthalic Acid as linker was synthesized by solvothermal method. The Coordination polymer is characterized by elemental analysis, infrared spectroscopy and single crystal x-ray diffraction studies. X-ray crystal structure analysis reveals that Coordination polymer exhibit rich structural chemistry. Thermogravimetric analysis shows that Coordination polymer is thermally robust. Single crystal X-ray diffraction analysis reveals that the CP crystallizes in the monoclinic system with space group C2/c, forming 3D network with coordination number seven. The asymmetric unit consists of one Eu (III) ion, one and a half fully deprotonated 2-aminoterepthalic acid units and one coordinated DEF molecule. The number of chemical formula units per unit cell is four. Each Eu (III) is seven coordinated surrounded by one DEF molecule and six 2-aminoterepthalate ligand molecules, in which all six adopt µ4-η1:η1 :η1 :η1 bonding modes. Each Eu(III) ion is coordinated to seven oxygen atoms, six of which come from six bidendate bridging carboxylate groups. This repeating bridging by carboxylate groups of ATPA2- lig and generates a 1D infinite rod shaped (SBU) lanthanide-carboxylate chain along b-axis. These chains of Eu(III) metal ions are interconnected and extend out repeatedly along all axes via ATPA2- which act as struts to construct pillared frameworks Keywords – Europium (III), 2-Aminoterepthalic Acid, DEF, Single Crystal X-ray Diffraction, Lanthanide-Carboxylate