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    Öğe
    Hydrothermal synthesis and crystal structures of a novel Keggin-type polyoxometalate based on 1,10-phenanthroline
    (2021) Uçar, Asuman; Fındık, Mükerrem; Kocak, Nuriye; Çolak, Alper Tolga; Şahin, Onur
    Herein a novel inorganic-organic hybrid Keggin-type heteropolymolybdate [Ni2Na(C12H8N2)4(BMo12O40)(H2O)2] (1) has been synthesized under hydrothermal conditions in aqueous solution. The cyrstal structure was fully characterized by powder X-ray diffraction (XRD), elemental analysis, Fourier-tranform infrared spectrum (FT-IR), Thermogravimetric analysis (TGA) and Scanning Electron Microscopy (SEM) analysis. Single crystal X-ray structural analysis demonstrates that the complex consists of a Keggin anion [BMo12O40]5− polyanion, four 1,10-phenanthroline (C12H8N2) ligands, two Ni(II) ions, two Na(I) ions and two aqua ligands. The experimental powder X-ray diffraction (XRD) result of the crystal is consistent with the calculated data. The SEM image shows that the compound crystals have a cubic structure.
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    Öğe
    Synthesis and Characterization of a New Nickel(II) Compound Derived from [BW12O40]3- and 2,2'-Bipyridyl
    (2020) Fındık, Mükerrem; Uçar, Asuman; Kocak, Nuriye; Şahin, Onur; Çolak, Alper Tolga
    A Keggin-type polyoxometalate {Ni(2,2'-bipy)2(H2O)[BW12O40]}3- (NiBWO) has been hydrothermallysynthesized in the high temperature resistant glass bottle for the first time. The structure has beencharacterized.by elemental analyses, X-ray diffraction, Fourier Transform Infrared Spectroscopy,Thermogravimetric Analysis, Scanning Electron Microscope and X-ray single crystal diffraction analyses.The X-ray single crystal study shows that the asymmetric unit of NiBWO is composed of one [BW12O40]5-anion, one [Ni(2,2'-bipy)2(H2O)]2+ and one and a half of [Ni(2,2'-bipy)3]2+ cations.