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    Öğe
    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.
  • [ X ]
    Öğe
    Structural, spectral, optical and antimicrobial properties of synthesized 1-benzoyl-3-furan-2-ylmethyl-thiourea
    (Elsevier, 2013) Karipcin, Fatma; Atis, Murat; Sariboga, Bahtiyar; Celik, Hasan; Tas, Murat
    The 1-benzoyl-3-furan-2-ylmethyl-thiourea (bftu) was synthesized and its structure was determined by elemental analyses, IR spectroscopy, H-1 and C-13 NMR spectroscopy and single crystal X-ray diffraction analysis. Also its antimicrobial activity was determined. We analyzed the optimized geometric structure and energies of bftu in the ground state as theoretically. Theoretical calculations were performed at the DFT level. Selected experimental bands were assigned and characterized on the basis of the scaled theoretical wavenumbers by their total energy distribution (TED). The nuclear magnetic resonance (NMR) chemical shifts of bftu molecule were calculated using the gauge-invariant-atomic orbital (GIAO) method in acetone solution and compared with the experimental data. The dipole moment, linear polarizability and first hyper polarizability values were also computed. (c) 2013 Elsevier B.V. All rights reserved.