A Two-Dimensional Coordination Polymer Based on 1,1':4',1''-Terphenyl-2',4,4'',5'-tetracarboxylate

Abstract

The coordination polymer, [MnL_0.5(H₂O)(phen)]_n (H₄L = 1,1':4',1''-terphenyl-2',4,4'',5'-tetracarboxylic acid, phen = 1,10-phenanthroline), has been solvothermal synthesized and structurally characterized by single-crystal X-ray diffraction. Complex crystallizes in triclinic sp. gr.$P\overline{1}$ with Z = 2. Two carboxylate oxygen atoms in the central phenyl rings from two μ$u_{6^{-}}$L^4– ligands doubly-bridge two Mn(II) ions to form the dinuclear $M{n}_2(O_{CO{O}^{-}}{)}_2$ unit. Each dinuclear $M{n}_2(O_{CO{O}^{-}}{)}_2$ unit links four L^4– ligands and each L^4–ligand bridges four dinuclear $M{n}_2(O_{CO{O}^{-}}{)}_2$ units to generate a 2D coordination network, which can be rationalized as a binodal (4,4) topological network by considering the dinuclear $M{n}_2(O_{CO{O}^{-}}{)}_2$ units and L^4– ligands as 4-connected nodes.