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    Dinuclear and polynuclear copper(II) complexes with 3,3′-thiodipropionate and unprecedented coordination mode
    (Pergamon-Elsevier Science Ltd, 2014) Arici, Mursel; Yesilel, Okan Zafer; Sahin, Onur; Tas, Murat
    Three new coordination compounds, {[Cu(mu(3)-tdp)(phen)]center dot 2H(2)O} (1), {[Cu(mu(3)-tdp)(bipy)]center dot H2O}(n) (2), [Cu(mu(3)-tdp)(bhen)(4)](NO3)(2)center dot 2H(2)O (3) [tdpH(2) = 3,3'-thiodipropionic acid, phen = 1,10-phenanthroline, bipy = 2,2'-bipyridine] were synthesized and characterized by the IR spectroscopy, elemental analysis, magnetic measurements and single crystal X-ray diffraction. Thermal behaviors and thermochromic properties of the complexes were investigated in detail. Complexes I and 2 are 1D coordination polymers while complex 3 is dinuclear structure. In complexes 1 and 2, the tdp acts as a tridentate bridging ligand to coordinate the two different Cu(H) centers to form 1D chain, which are extended into a 3D networks by hydrogen bonding and pi center dot center dot center dot pi interactions. The 3,3'-thiodipropionate ligand adopts a new coordination mode in 3. Furthermore, complex 3 changed the color from blue to green at 140 degrees C at solid state. (C) 2014 Elsevier Ltd. All rights reserved.
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    Öğe
    Gas adsorption/separation properties of metal directed self-assembly of two coordination polymers with 5-nitroisophthalate
    (Academic Press Inc Elsevier Science, 2014) Arici, Mursel; Yesilel, Okan Zafer; Keskin, Seda; Sahin, Onur
    Two new coordination polymers, namely, [Co(mu-nip)(mu-bpe)] (n) and [Zn(mu-nip)(mu-bpe)](n) (2) (nip: 5-nitroisophthalate, bpe: 1,2-bis(4-pyridyl)ethane) were hydrothermally synthesized and structurally characterized by single crystal X-ray diffraction, IR spectroscopy, elemental analysis and thermal analysis. Moreover, atomically detailed simulation studies of complex 2 for CO2/CH4 adsorption and separation were performed. Complex 1 consists of two dimensional (2D) (4,4) grid networks with the point symbol of 4(4).6(2). Complex 2 exhibits a 3-fold interpenetrating 3D framework with 6(5).8-dmp topology. Thermal properties of the complexes showed that both complexes were stable over 320 C. Simulation studies demonstrated that complex 2 can separate CO2 from CH4 at low pressures at 273 K. (C) 2013 Elsevier Inc. All rights reserved.
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    Öğe
    One- and three-dimensional silver(I)-5-sulfosalicylate coordination polymers having ligand-supported and unsupported argentophilic interactions
    (Academic Press Inc Elsevier Science, 2014) Arici, Mursel; Yesilel, Okan Zafer; Yesiloz, Yesim; Sahin, Onur
    Four new coordination polymers, namely, {Hemim center dot[Ag(Hssa)(H2O)]}(n) (1), {[Ag(ina)(2) Ag(Hssa)]center dot CH3OH center dot H2O}(n) (2)center dot{[Ag-2(Hssa)(dmP)(1.5)]center dot 2H(2)O}(n) (3) and [Ag-2(Hssa)(daoc)](n) (4) (Hssa: 5-Sulfosalicylate, emim: 2-ethyl-4-methylimidazole, ina: isonicotinamide, dmp: 2,5-dimethylpyrazine and daoc: 1,8-diaminooctane) were synthesized and characterized by IR spectroscopy, elemental analysis, single crystal X-ray diffraction, powder X-ray diffraction (PXRD) and thermal analysis techniques. Complexes 1 and 2 are one-dimensional (1D) coordination polymers while complexes 3 and 4 are threedimensional (3D) coordination polymers. Complex 3 consists of three dimensional (3D) 3,3,6-c net with 3,3,6T37 topology. Complex 4 exhibits a 2-fold interpenetrating 3D framework with tfc topology. Complexes 1-4 contain ligand-supported (1-3) and unsupported (4) argentophilic Ag center dot center dot center dot Ag interactions. Photoluminescence spectra of the complexes demonstrate that photoluminescent properties may be attributed to intraligand transition of coordinated Hssa ligand. (C) 2014 Elsevier Inc. All rights reserved.
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    Öğe
    The synthesis, characterization, and theoretical hydrogen gas adsorption properties of copper(II)-3,3′-thiodipropionate complexes with imidazole derivatives
    (Taylor & Francis Ltd, 2013) Arici, Mursel; Yesilel, Okan Zafer; Keskin, Seda; Sahin, Onur; Buyukgungor, Orhan
    Three new coordination polymers, [Cu((3)-tdp)(im)(2)](n) (1), {[Cu((3)-tdp)(1-mim)(2)]0.5H(2)O}(n) (2) and {[Cu-2((3)-tdp)(2)(4-mim)(4)]H2O}(n) (3) [tdpH(2)=3,3-thiodipropionic acid, im=imidazole, 1-mim=1-methylimidazole and 4-mim=4-methylimidazole], have been prepared and characterized by spectroscopic techniques (IR and UV-Vis), elemental analyzes, magnetic measurements, thermal analyzes, and single-crystal X-ray diffraction. Complexes 1-3 crystallize in the monoclinic system with space groups of C2/c and P2(1)/c, respectively. In 1-3, tdp is a bridging ligand to form 1-D chains, which are extended into a 2-D layer by hydrogen bonding and interactions. The 3,3-thiodipropionate exhibits an unexpected coordination mode in 1-3. Simulations were used to assess the potential of the complexes in H-2 storage applications.
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    Öğe
    Two dimensional coordination polymers with 3,3′-thiodipropionate: An unprecedented coordination mode and strong hydrogen-bond network
    (Pergamon-Elsevier Science Ltd, 2014) Arici, Mursel; Yesilel, Okan Zafer; Sahin, Onur; Buyukgungor, Orhan
    Four novel coordination polymers, namely [Co(mu(3)-tdp)(ina)(2)](n) (1), [Cu(mu(3)-tdp)(ina)(2)](n) (2), [Zn(mu(3)-tdp)(ina)(2)] (3) and [Zn(mu(3)-tdp)(na)2](n) (4) [tdp: 3,3'-thiodipropionate, ma: isonicotinamide and na: nicotinamide], were synthesized and structurally characterized by elemental analysis, IR and single-crystal X-ray diffraction techniques. Each M(II) ion (M(II)=Co(II) in I, Cu(II) in 2, Zn(II) in 3 and Zn(II) in 4) is coordinated by two nitrogen atoms of two different pyridine rings and four oxygen atoms from three different tdp ligands, forming distorted octahedral geometries. The tdp ligand exhibits an unprecedented coordination mode, namely the mu(3)-kappa O,O':kappa O:kappa O-bridging mode. Single crystal X-ray diffraction analysis results demonstrated that complexes 1-4 exhibit 2D layers with a point symbol of 3(3)center dot 4(3)center dot 5(4), which are extended into 3D supramolecular frameworks by R-2(2)(8) hydrogen-bonding motifs. Thermal analysis results showed that 2D complexes are stable up to 225, 189, 196 and 162 C, respectively. Moreover, the photoluminescent properties of complexes 3 and 4 were investigated at room temperature. (C) 2013 Elsevier Ltd. All rights reserved.