Syntheses, structures, and luminescence properties of five new coordination polymers based on 3-carboxy-1-(3′-carboxybenzyl)-2-oxidopyridinium and neutral ligands

Five CPs have been synthesized by a new semi-rigid dicarboxyl ligand and neutral ligands under hydrothermal conditions, and their luminescent sensing experiments for different small molecules/ions were studied in detail.

Five transition metal coordination polymers driven by a semirigid trifunctional nicotinic acid ligand: selective adsorption and magnetic properties

Five coordination polymers have been synthesized by a new organic linker containing three distinct types of functional groups together with the mixed 2,2′-bipy or 4,4′-bipy co-ligand, revealing various framework structures and selective gas adsorption and magnetic properties.

Crystal structure of catena-poly-[aqua(μ2-4,4′-bipyridine-κ2 N:N′)bis(3′,5,5′-tricarboxybiphenyl-2-carboxylato-κ2 O,O′)cadmium(II)], C42H28N2O17Cd

C42H28N2O17Cd, monoclinic, P2/n, a = 11.8533(4) Å, b = 7.1975(3) Å, c = 23.5490(7) Å, β = 115.181(2)°, V = 1818.14(11) Å3, Z = 2, R gt (F) = 0.0220, wR ref (F 2) = 0.0615, T = 293(2) K.

Crystal structure of poly-[μ 2-4,4′-bipyridine-κ 2 N:N′−μ 3-thiophene-2,3-di-carboxylato-κ 4 O,O′, O′′:O′′′ -cadmium(II)]

C16H10N2O4S1Cd, orthorhombic, P2(1)2(1)2(1), a = 8.977(2) Å, b = 11.751(3) Å, c = 14.224(4) Å, α = 90°, β = 90°, γ = 90°, V = 1500.6(6) Å3, Z = 4, R gt (F) = 0.0188, wR ref (F 2 ) = 0.0431, T = 296(2) K.

Crystal structure of bis(2,2′-bipyridine-κ2N,N′)-bis(thiophene-3,4-dicarboxylato-κ2O,O′)-cadmium(II), C32H22CdN4O8S2

C32H22CdN4O8S2, triclinic, P1̅ (no. 2), a = 7.7788(6) Å, b = 10.8548(9) Å, c = 18.830(2) Å, α = 84.334(1)°, β = 88.762(1)°, γ = 72.840(1)°, V = 1511.7 Å3, Z = 2, Rgt(F) = 0.0206, wRref(F2) = 0.0547, T = 296 K.

Tuning of net architectures of Ni(ii) and Zn(ii) coordination polymers using isomeric organic linkers

Ni(ii) and Zn(ii) coordination polymers with diverse net topologies were synthesized using isomeric organic linkers.

Five bis(imidazole)-based Coordination Polymers Tuned by Central Metal Ions and S-containing Dicarboxylates: Syntheses, Structures, and Properties

Five new coordination polymers, namely [Zn(2-CMSN)(biim-4)] (1), [Co2(2-CMSN)2(biim-4)(H2O)4] (2), [Ni(2-CMSN)(biim-4)0.5(H2O)2] (3), [Cd(2-CMSN)(biim-4)0.5(H2O)2] (4), and [Cd(ADTZ)(biim-4)1.5]·5H2O (5), (2-H2CMSN = 2-carboxymethylsulfanyl nicotinic acid, H2ADTZ = 2,5-(S-acetic acid) dimercapto-1,3,4-thiadiazole, biim-4 = 1,1′-(1,4-butanediyl)bis(imidazole)) have been synthesised under hydrothermal conditions and structurally characterised by single-crystal X-ray diffraction analysis, infrared spectroscopy, elemental analysis, thermogravimetric analysis, and powder X-ray diffraction. Complex 1 shows a 2D undulated sheet, which is constructed from 1D meso-helical [Zn-(biim-4)]n chains and linear [Zn-(2-CMSN)]n chains. Complexes 2–4 exhibit a similar 2D (4,4) grid network constructed from zigzag [M-(2-CMSN)]n chains and linear [M-(biim-4)]n chains (M = CoII, NiII and CdII), which possesses a ‘4+2’ type six-membered ring. Complex 5 displays a 3D architecture derived from 2D Cd-(biim-4) layers and double ADTZ linkers with diamond-type 66 topology. The effects of the central metals and S-containing dicarboxylates on the structures of the title coordination polymers have been discussed. The luminescent properties of complexes 1, 4, and 5 have been studied. Complex 5 exhibits photocatalytic activity for dye degradation under ultraviolet light and good stability towards photocatalysis.

catena-Poly[[[diaqua-copper(II)]-bis-[μ-1,5-bis-(1H-imidazol-1-yl)pentane-κ(2) N (3):N (3')]] naphthalene-1,5-disulfonate]

In the title complex, {[Cu(C₁₁H₁₆N₄)₂(H₂O)₂](C₁₀H₆O₆S₂)}_n, the Cu^II atom, lying on an inversion center, is six-coordinated by two water mol­ecules and four N atoms from four 1,5-bis­(1H-imidazol-1-yl)pentane (biim-5) ligands in a distorted octa­hedral geometry. Adjacent Cu^II atoms are linked by two biim-5 ligands, forming a chain along [111]. Two atoms of the pentane group are disordered over two sets of sites, with an occupancy ratio of 0.554 (18):0.446 (18). Inter­molecular O—H⋯O hydrogen bonds link the chains and the centrosymmetric naphthalene-1,5-disulfonate anions into a layer structure parallel to (0-11).