Browsing by Author "Yerli, Yusuf"

Filter results by typing the first few letters
Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Coordination versatility of 2,2 '-(ethylenedioxy)bis(ethylamine) in new mono- and polynuclear metal(II) complexes of saccharinate: Synthesis, characterization and crystal structures
    (Elsevier , 2014-03-23) Karadaǧ, Ahmet; Gözüaçık, Ayşe Keskin; Yerli, Yusuf; Şahin, Ertan; Yılmaz, Veysel Turan; Uludağ Üniversitesi/Fen Edebiyat Fakültesi/Kimya Bölümü.; 0000-0002-2849-3332; L-7238-2018; 7006269202
    The reaction of [M(sac)(2)(H2O)(4)]center dot 2H2(O) (M = Ni-II Cu-II, Cd(II)a nd sac = saccharinate) with 2,2'(ethylenedioxy)bis(ethylarnine) (edbea) resulted in [Ni(edbea)(sac)(2)]center dot 2H(2)O (1) [Cu(edbea)(sac)(2)] (2), [Cu(g-edbea)(sac)(2)](n) (3) and [Cd(edbea)2](sac)2 (4), which have been characterized by elemental analyses, magnetic measurements, FT-IR and EPR (for 3) spectroscopies, thermal analysis, magnetic properties (for 1 and 3) and X-ray diffraction methods. The edbea ligand display different coordination modes in the present complexes. For example, 1 and 2 it acts a tridentate way, while it exhibits a mu-N/O bidentate bridging mode between the copper centers in 3. On the other hand, the geometry of 4 eight-coordinated by two tetradentate edbea ligands is the bicapped trigonal prism structure in which S(degrees) value is the smallest. The EPR spectrum of 3 showed that the local geometry of Cu(II) ion has an elongated rhombic coordination. Complexes 1 and 3 exhibited a paramagnetic behavior as expected, but complex 1 displayed an antiferromagnetic interaction at low temperatures.
  • No Thumbnail Available
    Item
    Synthesis and crystal structures of novel copper(II) complexes with glycine and substituted phenanthrolines: reactivity towards DNA/BSA and in vitro cytotoxic and antimicrobial evaluation
    (Springer, 2017-01) Zorlu, Yunus; Yerli, Yusuf; Coşut, Bünyemin; İnci, Duygu; Aydın, Rahmiye; Vatan, Özgür; Sevgi, Tuba; Yılmaz, Dilek; Demirkan, Elif; Cinkılıç, Nilüfer; Uludağ Üniversitesi/Fen-Edebiyet Fakültesi/Kimya Bölümü.; Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Biyoloji Bölümü.; 0000-0002-0483-9642; 0000-0002-7687-3284; 0000-0002-7528-9529; 0000-0002-3595-6286; G-2201-2019; AAH-8936-2021; O-7508-2015; AAG-7112-2021; ABI-4472-2020; AAH-5296-2021; 55082306300; 56261495600; 16235098100; 57191880859; 6701369462; 23469245200; 26533892300
    New copper(II) complexes-dimeric-[Cu(nphen)(gly)(H2O)](+) (1) and [Cu(dmphen)(gly)(NO3)(H2O)] (2) (nphen = 5-nitro-1,10-phenanthroline, dmphen = 4,7-dimethyl-1,10-phenanthroline, and gly = glycine)-have been synthesized and characterized by CHN analysis, single-crystal X-ray diffraction techniques, FTIR, EPR spectroscopy, and cyclic voltammetry. The CT-DNA-binding properties of these complexes have been investigated by thermal denaturation measurements and both absorption and emission spectroscopy. The DNA cleavage activity of these complexes has been studied on supercoiled pUC19 plasmid DNA by gel electrophoresis experiments in the absence and presence of H2O2. Furthermore, the interaction of these complexes with bovine serum albumin (BSA) has been investigated using absorption and emission spectroscopy. The thermodynamic parameters, free-energy change (Delta G), enthalpy change (Delta H), and entropy change (Delta S) for BSA + complexes 1 and 2 systems have been calculated by the van't Hoff equation at three different temperatures (293.2, 303.2, and 310.2 K). The distance between the BSA and these complexes has been determined using fluorescence resonance energy transfer (FRET). Conformational changes of BSA have been observed using the synchronous fluorescence technique. In addition, in vitro cytotoxicities of these complexes on tumor cell lines (Caco-2, A549, and MCF-7) and healthy cells (BEAS-2B) have been examined. The antimicrobial activity of the complexes has also been tested on certain bacteria cells. The effect of mono and dimeric in the above complexes is presented and discussed. New copper(II) complexes-dimeric-[Cu(nphen)(gly)(H2O)](+) (1) and [Cu(dmphen)(gly) (NO3)(H2O)] (2) (nphen = 5-nitro-1,10-phenanthroline, dmphen = 4,7-dimethyl-1,10-phenanthroline and gly = glycine)-have been synthesized and characterized by CHN analysis, single-crystal X-ray diffraction techniques, FTIR and EPR spectroscopy. They have been tested for their in vitro DNA/BSA interactions by the spectroscopic methods. These complexes exhibited higher cytotoxic and antimicrobial activities. Complex 1 shows better DNA / BSA interactions in comparison to complex 2.