Yazarlar

  • MakaleYalnız künye2016Scopus SJRQ2
    Binuclear cyanido complexes containing [Pt(CN)4]2- building block: Synthesis, crystal structures, magnetic properties and anticancer activities

    Korkmaz, Sengul Asian; Karadag, Ahmet; Aydin, Ali; Yerli, Yusuf; Soylu, Mustafa Serkan

    Five new complexes of composition [Ni(N-bishydeten)Pt(CN)(4)] (1), [Ni(N-bishydeten)(2)][Pt(CN)(4)] (2), [Cu (N-bishydeten)Pt(CN)(4)] (3), [Cu(N-bishydeten)(2)][Pt(CN)(4)] (4) and [Cd(N-bishydeten)(2)][Pt(CN)(4)] (5) (N-bishydeten = N,N-bis(2-hydroxyethyl)-ethylenediamine) have been obtained and characterized by IR and EPR spectroscopies, elemental and thermal analysis and magnetic measurements. X-ray studies of 2 and 3 exhibited different structures and two different coordination modes of N-bishydeten ancillary ligand with a ratio of M:L. While N-bishydeten acts as a tetradentate with N', N', O and O' atoms in a molar ratio of 1:1 formed 2,2-CT-type zigzag chain for 3, it behaves tridentate ligand by ending up with six coordinated Ni-II center in a complex salt by using 1:2 M ratio for 2. None of the 1 and 3 complexes produced in this study showed sufficient anticancer activity but all did exhibit apoptotic properties and one of them also performed low cytotoxic activity against cell tested. (C) 2016 Elsevier B.V. All rights reserved.

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  • MakaleYalnız künye2012Scopus SJRQ2
    Cyano-complexes and salts with tetracyanonickellateII and N,N-bis(2-hydroxyethyl)-ethylenediamine: synthesis, IR spectra, magnetic properties, thermal analyses, and crystal structures

    Karadag, A.; Korkmaz, S. Aslan; Andaç, O.; Yerli, Y.; Topcu, Y.

    Four cyano complexes, [Ni(N-bishydeten)Ni(CN)(4)](n) (c1), [Cu(N-bishydeten)(2)][Ni(CN)(4)] (c2), [Zn-2(N-bishydeten)(2)Ni(CN)(4)](n) (c3), and [Cd(N-bishydeten)(2)][Ni(CN)(4)] (c4), have been synthesized and characterized by FT-IR, elemental, and thermal analyses. The structures of c2 and c4 were determined by single-crystal X-ray diffraction studies; both structures contain isolated cations and anions. The c2 consists of [Cu(N-bishydeten)(2)](2+) with octahedrally coordinated Cu-II and diamagnetic [Ni(CN)(4)](2-), but c4 consists of [Cd(N-bishydeten)(2)](2+), in which Cd-II is eight coordinate with two tetradentate N-bishydeten and diamagnetic [Ni(CN)(4)](2-). The value of the shape measure S (degrees) indicates that the coordination geometry around Cd-II lies along D-2d [dodecahedron; (dd)], C-2v [bicapped trigonal prism; (btp)], and D-4d [square antiprism; (sap)] but close to D-2d and D-4d. Variable temperature magnetic susceptibility measurements of c1 and c2 show the presence of little antiferromagnetic interaction below 20 K. Thermal analyses reveal that first neutral N-bishydeten and then cyano ligands were liberated from the complexes.

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