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  • Metallocenes  (1)
  • Pseudohalides  (1)
  • Selenium-sulfur chelates  (1)
  • Wiley-Blackwell  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Sulfur-Selenium Chelates: Crystal structure of the first titanocene derivative Ti(η5-C5H5)2SSe4 (1995)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 1800-1802 
    Details
    ISSN: 0044-2313
    Keywords: Titanocene sulfidotetraselenides ; Selenium-sulfur chelates ; X-ray analysis ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Schwefel-Selen Chelate: Kristallstruktur des ersten Titanocenderivats Ti(η5-C5H5)2SSe4Die Kristallstruktur von Bis(→5-cyclopentadientyl)titana(TiIV)-thiacyclohexaselenan, Ti(η5-C5H5)2SSe4 (1) wurde durch Röntgenstrukturanalyse bestimmt. (1) kristallisiert monoklin in der Raumgruppe P21/c, Z = 4, a = 13,179, b = 8,087, c = 14,447 Å, β = 114,857°. Der sechsgliedrige Heterocyclus TiSSe4 hat die erwartete Sesselkonformation. Im Chelatring ist das Ti-Atom and S und Se gebunden. Die Geometrie von (1) stimmt sehr gut mit der von Ti(η5-C5H5)2Se5 überein.
    Notes: The crystal structure of bis(η5-cyclopentadienyl)titana(TiIV)-thiacyclohexaselenane, Ti(η5-C5H5)2SSe4 (1), has been determined by X-ray diffraction data. (1) crystallizes in the monoclinic space group P21/c with four formula units in the unit cell. The cell dimensions are a = 13.179, b = 8.087, c = 14.447 Å, β = 114.857°. The six-membered heterocycle TiSSe4 has the expected chair conformation. In the chelate ring the Ti atom is S- and Se-bonded. The geometry of (1) corresponds closely to that of Ti(→5-C5H5)2Se5.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19956211032
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  • 2
    Electronic Resource
    Electronic Resource
    New Zirconocene Pseudohalogeno Complexes. Crystal structure of μ-oxo-bis[bis(cyclopentadienyl)isocyanatozirconium(IV)], [{Zr(η5-C5H5)2(NCO)}2O] (1997)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 1027-1031 
    Details
    ISSN: 0044-2313
    Keywords: Zirconium ; Cyclopentadienyl ; Metallocenes ; Pseudohalides ; Oxo-bridge ; Crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Neue Zirconocenpseudohalogen-Komplexe. Kristallstruktur von μ-Oxo-bis[bis(cyclopentadienyl)isocyanatzirconium(IV)], [{Zr(η5-C5H5)2(NCO)}2O]Die Isothiocyanatkomplexe [Zr(η5-C5H4Me)2(NCS)2] und [Zr(η5-C5H4tBu)2(NCS)2] wurden durch Umsetzung der entsprechenden Zirconocendichloride mit KSCN in Aceton dargestellt. Analoge Reaktionen mit KOCN bzw. KSeCN führten zur Bildung der stabilen, sauerstoffverbrückten Komplexe [{Zr(η5-C5H5)2(NCO)}2O] und [{Zr(η5-C5H4Me)2(NCSe)}2O]. Die Molekülstruktur von [{Zr(η5-C5H5)2(NCO)}2O] wurde röntgenographisch bestimmt und besteht aus zwei (η5-C5H5)2Zr(NCO)-Einheiten, die über eine Sauerstoffbrücke aneinander gebunden sind. Die Zr—O—Zr-Brücke [Bindungswinkel 165.7(2)°] ist nicht linear. Die verhältnismäßig kurzen Abstände Zr—O von 1.949(3) bzw. 1.942(3) Å deuten auf partiellen Doppelbindungscharakter. Die Verbindung enthält N-koordinative gebundene Cyanatliganden, die nahezu linear sind.
    Notes: The isothiocyanato complexes [Zr(η5-C5H4Me)2(NCS)2] and [Zr(η5-C5H4tBu)2(NCS)2] have been prepared from the corresponding zirconocene dichlorides and KSCN in acetone. Analogous reactions with KOCN or KSeCN, led to the formation of the stable dinuclear oxo-bridged complexes [{Zr(η5-C5H5)2(NCO)}2O] and [{Zr(η5-C5H4Me)2(NCSe)}2O], respectively. The molecular structure of [{Zr(η5-C5H5)2(NCO)}2O] has been determined by X-ray diffraction methods and consists of two (η5-C5H5)2Zr(NCO) units linked by an oxo bridge. The Zr—O—Zr bridge [angle 165.7(2)°] is non linear. The relatively short Zr—O bond lengths of 1.949(3) and 1.942(3) Å support the presence of partial double-bond character. The compound contains N-coordinated cyanato ligands which are almost linear.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.199762301161
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