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A novel coordination polymer, [Ag4(bpdc)(H2bpdc)(Hbpdc)2]n (bpdc=2,2’-bipyridyl-3,3’-dicarboxylate), was hydrothermally synthesized at 403 K and structurally characterized by single crystal X-ray diffraction analysis. The compound crystalizes in the monoclinic space group C2/c with a=1.9516(4) nm, b=1.9503(4) nm, c=1.2566(3) nm, and β=112.48(3)°. In the two-dimensional crystal structure, AgI center is coordinated, in a scarce coordination environment, double-capped tetrahedron, by one bpdc ligand to form N—Ag—N chelate bond via two pyridyl N atoms, and other two bpdc ligands to form two O—Ag—O chelate bonds, respectively, via two carboxyl O atoms. The bpdc ligands are present in one non-protonated form, bpdc, and two protonated forms, Hbpdc and H2bpdc, which all act as μ3-ligand in a hexadentate fashion (N, N’; O, O’; O, O’) to coordinate with three Ag centers, respec- tively, through the three chelate bonds. This coordinated fashion of bpdc ligand is first found in the title compound. UV-Vis-NIR reflectance spectroscopy study revealed insulator nature for the crystal with an optical energy gap of 3.1 eV.
A novel coordination polymer, was hydrothermally synthesized at 403 K and structurally characterized by single crystal X (bpdc) (H2bpdc) (Hbpdc) 2] n (bpdc = 2,2’- bipyridyl-3,3’-dicarboxylate) -ray diffraction analysis. The compound crystalizes in the monoclinic space group C2 / c with a = 1.9516 (4) nm, b = 1.9503 (4) nm, c = 1.2566 (3) nm and β = 112.48 (3) °. In the two-dimensional crystal structure, AgI center is coordinated, in a scarce coordination environment, double-capped tetrahedron, by one bpdc ligand to form N-Ag-N chelate bond via two pyridyl N atoms, and the other two bpdc ligands to form Two O-Ag-O chelate bonds, respectively, via two carboxyl O atoms. The bpdc ligands are present in one non-protonated form, bpdc, and two protonated forms, Hbpdc and H2bpdc, which all act as μ3-ligand in a hexadentate This coordinated fashion of bpdc ligands is first found in in (N, N ’; O, O’; O, O ’) to coordinate with three Ag centers, respec- tively, through the three chelate bonds the title compound. UV-Vis-NIR reflectance spectroscopy study showed insulator property for the crystal with an optical energy gap of 3.1 eV.