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A new 3-D Mn(II)-organic extended framework with a 1,4-naphthalenedicarboxylate ligand, [Mn(1,4-DNC)(DMA)]n(1), was obtained by the solvothermal reaction of MnCl2⋅4H2O and 1,4-naphthalenedicarboxylate (1,4-H2DNC) in dimethylacetamide organic solvents. Each Mn(II) atom is five-coordinated in a triagonal–bipyramidal coordination environment by four carboxylate O atoms from four different 1,4-DNC2–ligands and one O atom from a terminal DMA molecule. The neighboring Mn(II) atoms are doubly bridged by 1,4-DNC2–ligands to give a one-dimensional coordination polymeric chain [Mn(COO)2]n, and each chain is connected to four other different chains through µ4-kO1:kO2:kO3:kO4 1,4-DNC2–ligands to form a 3-D network of1. [ABSTRACT FROM AUTHOR]

Eight unprecedented Ln-NDC coordinationpolymers with BBI as templates{[HBBI][Ln(NDC)2(H2O)]·H2O [Ln= La (1), Pr (2)], [HBBI]2[Sm(NDC)2(H2O)]2·1/2H2O (3), and [HBBI][Ln(NDC)2(H2O)] [Ln =Eu (4), Gd (5), Tb (6), Dy(7), Er (8)] [Ln = lanthanide, H2NDC = 1,4-naphthalenedicarboxylic acid, BBI = bis(2,2′-biimidazole)]}have been hydrothermally synthesized and structurally characterizedby elemental analyses, IR spectra, and single-crystal X-ray diffraction.Complexes 1–8crystallize in themonoclinic space group P21/cand display similar (8,8)-connected 3-D frameworks with differentdinuclear Ln secondary building units due to the effect of Ln contractionand diverse coordination modes of NDC2–ligands.As the ionic radii of Ln ions decrease, the coordination numbers ofLn ions decrease from 10, to 9, to 8. The variable-temperature magneticproperties of 2–8have been investigated.The strong fluorescent emissions of 4demonstrate thatligand-to-EuIIIenergy transfer is efficient. In addition,thermogravimetric analyses and optical diffuse reflectance spectraof these compounds are also described. [ABSTRACT FROM AUTHOR]

The silver(I) complex, [Ag(C(5)H(3)BrNO(3)S)](n), was obtained by reaction of AgNO(3) and 5-bromopyridine-3-sulfonic acid. The Ag(I) ion is coordinated by an O(3)N donor set in a slightly distorted tetra-hedral geometry. The Ag(I) ions are linked by μ(4)-5-bromo-pyridine-3-sulfonate ligands, forming a layer parallel to (100). The layers are further connected via C-H⋯Br hydrogen-bonding inter-actions into a three-dimensional supra-molecular network. The Ag⋯Ag separation is 3.0159 (6) Å, indicating the presence of argentophilic inter-actions.