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  • Inorganic Chemistry  (42)
  • Bridging ligands  (1)
  • Halogen bridges  (1)
  • 1995-1999
  • 1990-1994  (1)
  • 1975-1979  (34)
  • 1945-1949  (8)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 15 (1976), S. 713-727 
    ISSN: 0570-0833
    Keywords: Chloride ligands ; Halogen bridges ; Bridging ligands ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The chemistry of the gaseous halide complexes which have been observed in large numbers in recent years is discussed for the example of chlorides. Homo-complexes - dimeric or polymeric chloride molecules containing chlorine-bridge linkages [e.g.(NaCl)n, n = 2 - 4; (CuCl)n, n = 2 - 5; (BeCl2)n, n = 2 - 4; Pd6Cl12] - occur through broad areas of the Periodic Table. Comparison of the dissociation enthalpy of such molecules with the vaporization enthalpy of the liquid chlorides is particularly informative. Hetero-complexes are formed from different chloride molecules by linkage through Cl bridges. Not only 1:1 complexes (e.g. NaAlCl4, TIPbCl3, KThCl5, CdPbCl4, AlUCl8) but also larger molecules (e.g. CoAl2Cl8, CrAl3Cl12, Cu2UCl6, In2UCl10) are known. Types of formulas, structures, and above all the formation enthalpies of such complexes are discussed critically. Hetero-complexes are useful in chemical transport reactions, as aids in syntheses, and in gas-chromatographic separations (lanthanoids, actinoids). They also play a part in many industrial processes (chlorination of ores) and in recently developed types of high-pressure discharge tubes.
    Additional Material: 4 Ill.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 415 (1975), S. 241-248 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: [Mo6Cl8](OC6F5)4(HMPA)2, a Volatile Molybdenum Cluster CompoundThe title compound with HMPA = hexamethylphosphoric acid triamide has been prepared within the two-phase system CH2Cl2/H2O. Besides a thermal decomposition the compound is volatile in the vacuum at ≈300°C. The most intense complexion in the mass spectrum is [Mo6Cl8](OC6F5)4(HMPA)+, mass 1771.The characterization of the ions on the basis of the isotopic distribution was possible using the compound prepared with 96Mo instead of natural molybdenum. The mass scale has been calibrated by means of Pt6Cl12.
    Notes: Die in der Überschrift genannte Verbindung mit HMPA = Hexamethylphosphorsäuretriamid wurde im 2-Phasen-System CH2Cl2/H2O hergestellt. Sie ist im Vakuum bei ≍ 300 ° C z. T. unzersetzt flüchtig. Das intensitätsstärkste Komplexion im Massenspektrum ist [Mo6Cl8](OC6F5)4(HMPA)+ mit der Masse 1771.Die Charakterisierung der Ionen auf Grund der Isotopenverteilung gelang beim Ersatz des natürlichen Molybdäns durch 96 Mo. Darüber hinaus wurde die Massenskala mit Pt6Cl12 geeicht.
    Additional Material: 8 Ill.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 435 (1977), S. 5-12 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: TeCl4 as a Transport Agent. TeOCl2.g and the Chemical Transport of TeO2 and Te6O11Cl2Mass spectroscopic observations show that in the system TeO2/TeClx the gas molecule TeOCl2 is an important constituent of the gas phase.Thermal decomposition of Te6O11Cl2, made on the thermobalance and also mass spectroscopic measurements lead to the enthalpy of formation of TeOCl2,g; ΔH°(298) = -42 ± 3 kcal.The chemical transport of TeO2 (or Te6O11Cl2) has been successful by means of Cl2, TeCl4 or TeCl2 as transport agents via TeOCl2.Thermodynamic calculations show that the suitability of TeCl4 as transport agent for many oxides, even in different oxidation states, is caused by the fact that this transport agent, dependent upon the solid acts as TeCl4 (TeCl2 + Cl2) or TeCl2. The redoxpotential required by the solid can be adapted by the gas without a loss of the transport properties of the gas phase.
    Notes: Massenspektroskopische Beobachtungen zeigen, daß TeOCl2,g im System TeO2/TeClx als wesentlicher Bestandteil des Gleichgewichtsgases auftritt.Die thermische Zerlegung von Te6O11Cl2 an der Thermowaage und die massenspektroskopischen Beobachtungen führen zur Bildungsenthalpie für TeOCl2,g; ΔH° (298) = -42 ± 3 kcal.Der chemische Transport von TeO2 (bzw. Te6O11Cl2) via TeOCl2 gelingt mit Cl2, TeCl4 oder TeCl2 als Transportmittel.Thermodynamische Rechnungen ergeben, daß die Eignung von TeCl4 als Transportmittel für viele Oxide,  -  auch in verschiedenen Oxydationsstufen  -  darauf beruht, daß dieses Transportmittel je nach Partner als TeCl4 bzw. TeCl2 + Cl2 oder als TeCl2 wirksam wird. Das vom Bodenkörper geforderte Redoxpotential kann sich also in einem weiten Bereich einstellen, ohne daß das Gas seine Transporteigenschaften verliert.
    Additional Material: 4 Tab.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 439 (1978), S. 80-82 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Chemical Transport of Nickel by Indium IodideAt higher temperatures (1273 → 1073 K) the chemical transport of nickel by means of indium iodide going into the zone with lower temperature is caused by the endothermic reaction Ni + InJ3O,g = NiJ2,g + InJ,g At lower temperatures (873 → 973 K) this reaction is superimposed by the formation of gas complexes. These exothermic reactions cause transport in the inversed direction.
    Notes: Der chemische Transport des Nickels mit Indium (III)-jodid erfolgt bei höherer Temperatur (1273 → 1073 K) zur weniger heißen Zone hin mit der endothermen Reaktion Ni + InJ3,g = NiJ2,g + InJ,g. Bei niedrigerer Temperatur (873 → 973 K) wird diese Reaktion durch die Bildung von Gaskomplexen überlagert. Diese exothermen Vorgänge Verursachen den Transport in umgekehrte Richtung.
    Additional Material: 1 Tab.
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 440 (1978), S. 130-136 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Chemical Transport of Sb2S3 With I2The chemical transport of Sb2S3 with iodine is discussed on thermodynamical basis under consideration of the gaseous molecules I2, I1, SbI3, S2, S3, S4, S5, S6, S7 and S8. The experiments are in a satisfying agreement with the calculations.
    Notes: Der Chemische Transport von Sb2S3 mit jod wird unter Berücksichtigung der Gasmolekeln J2, J1, SbJ3, S2, S3, S4, S5, S6, S7 und S8 auf themodynamischer Grundlage diskutiert. Die Experimente stimmen mit den Berechnungen befriedigend überein.
    Additional Material: 5 Ill.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 441 (1978), S. 216-218 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Catalysed Volatilization of Red Phosphorus and of ClaudetiteThe catalysis of the volatilization of Pred (as P4) by AlCl3,g, and of the volatilization of claudetite (as As4O6) by I2,g is observed by mass spectrometry.
    Notes: Die Katalyse der Verflüchtigung von Prot (als P4) durch AlCl3,g sowie der Verflüchtigung von Claudetit (als As4O6) durch J2,g wird massenspektrometrisch beobachtet.
    Additional Material: 3 Ill.
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 450 (1979), S. 107-114 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Gas Complexes in the System NaCl/ScCl3Mass spectroscopic investigations with the condensed phases NaCl or NaCl + ScCl3 resp. lead for homogeneous gas equilibria to the data given in „Inhaltsübersicht“.Besides the main complex NaScCl4 small concentrations of Na2ScCl5 and Na2Sc2Cl8 also exist.
    Notes: Massenspektroskopische Untersuchungen mit NaCl bzw. NaCl + ScCl3 als Bodenkörper führten zu folgenden Ergebnissen (homogene Gasgleichgewichte; 298 K): .
    Additional Material: 3 Tab.
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 459 (1979), S. 5-6 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 459 (1979), S. 140-144 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Gas Molecules Pd2Al2Cl10 and PdAlCl5 as Accompanists of PdAl2Cl8Mass spectrometric observations using a double cell showed that the reaction of gaseous Al2Cl6 with solid PdCl2 besides the known gaseous complex PdAl2Cl8 gives PdAlCl5 and the unexpected complex Pd2Al2Cl10. For the equilibrium \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm \alpha - PdCl}_{\rm 2} {\rm + PdAl}_{\rm 2} {\rm Cl}_{{\rm 8,g}} {\rm = Pd}_{\rm 2} {\rm Al}_{\rm 2} {\rm Cl}_{{\rm 10,g}} $$\end{document} (with ΔCp≅ -1 cal/K) ΔH°(298) = 7.5 kcal/Mol and ΔS°(298) = 5.3 ± 2 cl have been obtained.
    Notes: Massenspektrometrische Beobachtungen mit einer Doppelzelle zeigten, daß bei der Einwirkung von gasförmigem Al2Cl6 auf festes PdCl2 neben dem bekannten gasförmigen Komplex PdAl2Cl8 auch PdAlCl5 und der unerwartete Komplex Pd2Al2Cl10 auftreten. Für das Gleichgewicht \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm \alpha - PdCl}_{\rm 2} {\rm + PdAl}_{\rm 2} {\rm Cl}_{{\rm 8,g}} {\rm = Pd}_{\rm 2} {\rm Al}_{\rm 2} {\rm Cl}_{{\rm 10,g}} $$\end{document} ist (mit ΔCp≅ - 1 cal/K) ΔH°(298) = 7,5 kcal/Mol und ΔS°(298) = 5,3 ± 2 cl.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 415 (1975), S. 202-216 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Equilibria between Platinum and Chlorine within the Temperature Range from 973 to 1373 K. The Molecules PtCl2 and PtCl3 and their Thermodynamic DataThe formation of the gaseous chlorides PtCl2 and PtCl3 by reaction of Pt or Pt/Rh with Cl2 has been investigated by equilibrium measurements by means of the flow method. Results are for Pt + Cl2 = PtCl2.g, ΔH°(298) = 26.4 kcal, ΔS°(298) = 5.4 cl and for Pt + 1.5 Cl2 = PtCl3.g, ΔH°(298) = 10.5 kcal, ΔS°(298) = - 9.4 cl.From estimated molecular-constant data the standard entropy values S°(298) (cl) have been calculated: PtCl2,g (70.3); PtCl3,g (80.5); PtCl4,g(88.9).
    Notes: Die Reaktion von Pt und Pt/Rh mit Cl2 unter Bildung gasförmiger Chloride wurde mit der Mitführungsmethode untersucht. Danach gilt für Pt + Cl2 = PtCl2,g ΔH°(298) = 26,4 kcal, ΔS°(298) = 5,4 cl und für Pt + 1,5 Cl2 = PtCl3,g, ΔH°(298) = 10,5 kcal, ΔS°(298) = -9,4 cl.Die aus (geschätzten) Molekülkonstanten berechneten Normalentropien S°(298) (cl) betragen: PtCl2,g (70,3); PtCl3,g (80,5) PtCl4,g (88,9).
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