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  • 1
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The infrared and Raman spectra of AIMeO2F3 (Me = Mo; AI = K, NH4, Rb, Cs, Tl; Me = W, AI = Rb, Cs) have been recorded and assigned. The postulated structure model of MeO2F3- has been confirmed by a single crystal X-ray study of CsMoO2F3. Octahedrally coordinated metal atoms are linked by cis-bridging fluorine atoms into infinite chains. The cis oxygen atoms are coplanar with the bridging fluorine atoms.
    Notes: Die Infrarot- und RAMAN-Spektren der Salze AIMoO2F3 (AI = K, NH4, Rb, Cs, Tl) und der erstmalig dargestellten AIWO2F3 (AI = Rb, Cs) wurden registriert und zugeordnet. Das daraus abgeleitete Strukturmodell für das Ion MeO2F3- wurde durch eine röntgenographische Strukturuntersuchung an CsMoO2F3 bestätigt. In MeO2F3- ist das Me-Atom verzerrt oktaedrisch koordiniert (MeO2F2F2/2). Die Oktaeder sind durch cis-stehende Fluoratome zu unendlichen Ketten verknüpft, die cis-dioxo-Gruppe steht koplanar zu den Brückenatomen.
    Additional Material: 4 Ill.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 451 (1979), S. 103-108 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: I.R. Spectra of Some Alkali Salts of Oxo-acids at High PressuresThe I.R. spectra of KNO3, K2CO3, CaCO3, KClO3, KBrO3, KJO3, NaHCO2, NaCH3CO2, und Na2C2O4 under pressures up to 48 kbar are presented and the pressure induced variations are discussed.
    Notes: Die IR-Spektren von KNO3, K2CO3, CaCO3, KClO3, KBrO3, KJO3, NaHCO2, NaCH3CO2 und Na2C2O4 unter Drücken bis zu 48 kbar werden mitgeteilt und die druckinduzierten Änderungen der Spektren werden diskutiert.
    Additional Material: 1 Ill.
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  • 3
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Experiments for preparing hexachlorotitanates by reaction of TiCl4 with alkali chlorides or calcium chloride in pressure bombs at 550-750°C are described. Pure K2TiCl6 and Cs2TiCl6 were obtained, whereas the reaction products from LiCl, NaCl and CaCl2 contained not more than 4 to 6.5 weight per cent of titanium. A content of up to 0.24 weight per cent trivalent titanium is found at higher temperatures resulting from evolution of elemental chlorine from the titanium tetrachloride.
    Notes: Es werden Versuche zur Darstellung von Hexachlorotitanaten aus TiCl4 und Alkalichlorid oder Calciumchlorid in Druckbomben bei Temperaturen von 550-750°C beschrieben. K2TiCl6 und Cs2TiCl6 können dabei rein und wasserfrei erhalten werden, während mit LiCl, NaCl und CaCl2 nur Produkte mit Titangehalten von max. 4 bis 6,5 Gew.-% entstehen. Mit steigender Versuchstemperatur treten in den Präparaten durch Cl2-Abspaltung aus dem TiCl4 entstandene Gehalte an dreiwertigem Titan auf, die bis zu 0,24 Gew.-% betragen können.
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  • 4
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structure and Vibrational Spectra of Trioxodifluoromolybdates(NH4)2MoO3F2 crystallizes in the space group P212121 with a = 6.361(1); b = 7.488(1), c = 11.103(2) Å and Z = 4. According to a threedimensional X-ray structure analysis (596 reflections, R = 0.066) the polymer MoO3F22--ion consists of planar cis-dioxodifluoro units which are linked into an infinite chain by alternating short (1.880 Å) and long (2.007 Å) Mo—O bonds. The vibrational spectra of (NH4)2MoO3F2 and K2MoO3F2. H2O are discussed.
    Notes: (NH4)2MoO3F2 kristallisiert in der Raumgruppe P212121 mit a = 6,361(1) b = 7,488(1), c = 11,103(2) Å und Z = 4. Nach dem Ergebnis einer dreidimensionalen Röntgenstrukturanalyse (596 Reflexe, R = 0,066) liegen im MoO3F22--Ion planare cis-dioxodifluoro- Gruppen vor, die senkrecht dazu über alternierend kurze (1,880 Å) und lange (2,007 Å) Mo-O-Brückenbindungen zu unendlichen Ketten verknüpft sind. Die Schwingungsspektren von (NH4)2MoO3F2 und K2MoO3F2. H2O wurden registriert und zugeordnet.
    Additional Material: 2 Ill.
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  • 5
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New Osooxalatocomplexes of Molybdenum (VI)The preparation of the compounds Cs2[Mo2O5F2(C2O4)] · H2O and Cs2[Mo2O4Cl4(C2O4)] · 2 H2O is reported. The structure of the complex anions, which are containing quadridentated oxalate ligands, is derived from their vibration spectra. The compounds [NR4]2[Mo2O4F4(C2O4)] with R = CH3 and C2H5 are examined for comparison.
    Notes: Die Darstellung der Verbindungen Cs2[Mo2O5F2(C2O4)] · H2O und Cs2[Mo2O4Cl4(C2O4)] · 2 H2O wird beschrieben. Zur Konstitutionsbestimmung der komplexen, vierzähnige Oxalatliganden enthaltenden Anionen werden ihre Schwingungsspektren sowie diejenigen der zu Vergleichszwecken hergestellten Verbindungen [N(CH3)4]2[Mo2O4F4 (C2O4)] und [N(C2H5)4]2[Mo2O4 F4(C2O4)] gemessen und teilweise zugeordnet.
    Additional Material: 3 Tab.
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  • 6
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on the Coordination Chemistry of Zinc Dialkyls. XIV. On Lithium and Zinc 3(N, N-Dialkylamino)propyl CompoundsIt is reported on synthesis and properties of organo lithium compounds of the type [R2NCH2CH2CH2Li]n. The structure is proposed by reason of molecular weight determination and 13C-NMR spectra.In dependence of the molar ratio the lithium dialkylamino propyls and the corresponding Grignard reagents react with zinc chloride forming dimer alkyl zinc chlorides [R2NCH2CH2CH2ZnCl]2 or monomer spiranoide chelate complexes of the formula [R2NCH2CH2CH2]2Zn (R = CH3, C2H5).
    Notes: Es wird über die Synthese und die Eigenschaften von Organolithium-verbindungen des Typs [R2NCH2CH2CH2Li]n berichtet und ein Strukturvorschlag aufgrund von Molmassebestimmungen und 13C-NMR-Spektren unterbreitet.Die Lithium-dialkylaminopropyle sowie die entsprechenden Grignardverbindungen reagieren mit Zinkchlorid je nach Molverhältnis der Reaktionspartner zu dimeren Alkylzinkchloriden [R2NCH2CH2CH2ZnCl]2 bzw. monomeren, teilweise schon bekannten, spiranoiden Innerkomplexen der Formel [R2NCH2CH2CH2]2Zn (R = CH3. C2H5).
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    ISSN: 0365-9496
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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