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Inorganics    Follow    
  This is an Open Access Journal Open Access journal
     ISSN (Online) 2304-6740
     Published by MDPI Homepage  [119 journals]
  • Inorganics, Vol. 1, Pages 1-2: Welcome to Inorganics: A New Open Access,
           Inclusive Forum for Inorganic Chemistry
    • Authors: Duncan Gregory
      Pages: 1 - 2
      Abstract: One of the beauties of inorganic chemistry is its sheer diversity. Just as chemistry sits at the centre of the sciences, inorganic chemistry sits at the centre of chemistry itself. Inorganic chemists are fortunate in having the entire periodic table at their disposal, providing a palette for the creation of a multitude of rich and diverse compounds and materials from the simplest salts to the most complex of molecular species. It follows that the language of inorganic chemistry can thus be a demanding one, accommodating sub-disciplines with very different perspectives and frames of reference. One could argue that it is the unequivocal breadth of inorganic chemistry that empowers inorganic chemists to work at the interfaces, not just between the traditional Inorganic-Organic-Physical boundaries of the discipline, but in the regions where chemistry borders the other physical and life sciences, engineering and socio-economics.
      PubDate: 2013-06-17
      DOI: 10.3390/inorganics1010001
      Issue No: Vol. 1, No. 1 (2013)
       
  • Inorganics, Vol. 1, Pages 3-13: I62− Anion Composed of Two
           Asymmetric Triiodide Moieties: A Competition between Halogen and Hydrogen
           Bond
    • Authors: Martin van Megen, Guido Reiss
      Pages: 3 - 13
      Abstract: The reaction of 1,8-diaminooctane with hydroiodic acid in the presence of iodine gave a new polyiodide-containing salt: 1,8-diaminiumoctane bis(triiodide), (H3N-(CH2)8-NH3)[I3]2. The title compound has been characterized by crystallographic and spectroscopic methods. The polyiodide ion is the first example of a hydrogen bonded I62− dianion consisting of two very asymmetric triiodide components with I−I distances of 2.7739(4) and 3.1778(4) Å interacting by a weak halogen bond (I···I: 3.5017(2) Å). The structural parameters of the triiodide anions, derived from X-ray crystallographic data, are in good agreement with the Raman and Far-IR spectroscopic results.
      PubDate: 2013-10-31
      DOI: 10.3390/inorganics1010003
      Issue No: Vol. 1, No. 1 (2013)
       
  • Inorganics, Vol. 1, Pages 14-31: Amorphous Li-Al-Based Compounds: A Novel
           Approach for Designing High Performance Electrode Materials for Li-Ion
           Batteries
    • Authors: Franziska Thoss, Lars Giebeler, Jürgen Thomas, Steffen Oswald, Kay Potzger, Helfried Reuther, Helmut Ehrenberg, Jürgen Eckert
      Pages: 14 - 31
      Abstract: A new amorphous compound with the initial atomic composition Al43Li43Y6Ni8 applied as electrode material for Li-ion batteries is investigated. Unlike other amorphous compounds so-far investigated as anode materials, it already contains Li as a base element in the uncycled state. The amorphous compound powder is prepared by high energy ball milling of a master alloy. It shows a strongly enhanced specific capacity in contrast to amorphous alloys without Li in the initial state. Therewith, by enabling a reversible (de)lithiation of metallic electrodes without the phase transition caused volume changes it offers the possibility of much increased specific capacities than conventional graphite anodes. According to the charge rate (C-rate), the specific capacity is reversible over 20 cycles at minimum in contrast to conventional crystalline intermetallic phases failing by volume changes. The delithiation process occurs quasi-continuously over a voltage range of nearly 4 V, while the lithiation is mainly observed between 0.1 V and 1.5 V. That way, the electrode is applicable for different potential needs. The electrode stays amorphous during cycling, thus avoiding volume changes. The cycling performance is further enhanced by a significant amount of Fe introduced as wear debris from the milling tools, which acts as a promoting element.
      PubDate: 2013-11-18
      DOI: 10.3390/inorganics1010014
      Issue No: Vol. 1, No. 1 (2013)
       
  • Inorganics, Vol. 1, Pages 32-45: Facile and Selective Synthetic Approach
           for Ruthenium Complexes Utilizing a Molecular Sieve Effect in the
           Supporting Ligand
    • Authors: Dai Oyama, Ayumi Fukuda, Takashi Yamanaka, Tsugiko Takase
      Pages: 32 - 45
      Abstract: It is extremely important for synthetic chemists to control the structure of new compounds. We have constructed ruthenium-based mononuclear complexes with the tridentate 2,6-di(1,8-naphthyridin-2-yl)pyridine (dnp) ligand to investigate a new synthetic approach using a specific coordination space. The synthesis of a family of new ruthenium complexes containing both the dnp and triphenylphosphine (PPh3) ligands, [Ru(dnp)(PPh3)(X)(L)]n+ (X = PPh3, NO2−, Cl−, Br−; L = OH2, CH3CN, C6H5CN, SCN−), has been described. All complexes have been spectroscopically characterized in solution, and the nitrile complexes have also been characterized in the solid state through single-crystal X-ray diffraction analysis. Dnp in the present complex system behaves like a “molecular sieve” in ligand replacement reactions. Both experimental data and density functional theory (DFT) calculations suggest that dnp plays a crucial role in the selectivity observed in this study. The results provide useful information toward elucidating this facile and selective synthetic approach to new transition metal complexes.
      PubDate: 2013-12-09
      DOI: 10.3390/inorganics1010032
      Issue No: Vol. 1, No. 1 (2013)
       
  • Inorganics, Vol. 1, Pages 46-69: Synthesis and Characterisation of
           Lanthanide N-Trimethylsilyl and -Mesityl Functionalised
           Bis(iminophosphorano)methanides and -Methanediides
    • Authors: George Marshall, Ashley Wooles, David Mills, William Lewis, Alexander Blake, Stephen Liddle
      Pages: 46 - 69
      Abstract: We report the extension of the series of {BIPMTMSH}− (BIPMR = C{PPh2NR}2, TMS = trimethylsilyl) derived rare earth methanides by the preparation of [Ln(BIPMTMSH)(I)2(THF)] (Ln = Nd, Gd, Tb), 1a–c, in 34–50% crystalline yields via the reaction of [Ln(I)3(THF)3.5] with [Cs(BIPMTMSH)]. Similarly, we have extended the range of {BIPMMesH}− (Mes = 2,4,6-trimethylphenyl) derived rare earth methanides with the preparation of [Gd(BIPMMesH)(I)2(THF)2], 3, (49%) and [Yb(BIPMMesH)(I)2(THF)], 4, (26%), via the reaction of [Ln(I)3(THF)3.5] with [{K(BIPMMesH)}2]. Attempts to prepare dysprosium and erbium analogues of 3 or 4 were not successful, with the ion pair species [Ln(BIPMMesH)2][BIPMMesH] (Ln  = Dy, Er), 5a–b, isolated in 31–39% yield. The TMEDA (N',N',N",N"-tetramethylethylenediamine) adducts [Ln(BIPMMesH)(I)2(TMEDA)] (Ln = La, Gd), 6a–b, were prepared in quantitative yield via the dissolution of [La(BIPMMesH)(I)2(THF)] or 3 in a TMEDA/THF solution. The reactions of [Ln(BIPMMesH)(I)2(THF)] [Ln  = La, Ce, Pr, and Gd (3)] or 6a–b with a selection of bases did not afford [La(BIPMMes)(I)(S)n] (S = solvent) as predicted, but instead led to the isolation of the heteroleptic complexes [Ln(BIPMMes)(BIPMMesH)] (Ln = La, Ce, Pr and Gd), 7a–d, in low yields due to ligand scrambling.
      PubDate: 2013-12-12
      DOI: 10.3390/inorganics1010046
      Issue No: Vol. 1, No. 1 (2013)
       
  • Inorganics, Vol. 1, Pages 70-84: Synthesis of Diazonium
           Tetrachloroaurate(III) Precursors for Surface Grafting
    • Authors: Sabine Neal, Samuel Orefuwa, Atiya Overton, Richard Staples, Ahmed Mohamed
      Pages: 70 - 84
      Abstract: The synthesis of diazonium tetrachloroaurate(III) complexes [R-4-C6H4N≡N]AuCl4 involves protonation of anilines CN-4-C6H4NH2, C8F17-4-C6H4NH2, and C6H13-4-C6H4NH2 with tetrachloroauric acid H[AuCl4] 3H2O in acetonitrile followed by one-electron oxidation using [NO]PF6. FT-IR shows the diazonium stretching frequency at 2277 cm−1 (CN), 2305 cm−1 (C8F17), and 2253 cm−1 (C6H13). Thermogravimetric Analysis (TGA) shows the high stabilities of the electron-withdrawing substituents C8F17 and CN compared with the electron-donating substituent C6H13. Residual Gas Analysis (RGA) shows the release of molecular nitrogen as the main gas residue among other small molecular weight chlorinated hydrocarbons and chlorobenzene. Temperature-Dependent X-Ray Powder Diffraction (TD-XRD) shows the thermal decomposition in C6H13 diffraction patterns at low temperature of 80 °C which supports the TGA and RGA (TGA-MS) conclusions. X-ray structure shows N≡N bond distance of approximately 1.10 Å and N≡N-C bond angle of 178°.
      PubDate: 2013-12-17
      DOI: 10.3390/inorganics1010070
      Issue No: Vol. 1, No. 1 (2013)
       
 
 
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