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  • 1
    Electronic Resource
    Electronic Resource
    Darstellung und Struktur von Tetrafluoro(η5-pentamethylcyclopentadienyl)niob und Tetrafluoro(η5-cyclopentadienyl)niobProfessor Friedo Huber zum 60. Geburtstage gewidmet (1990)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 580 (1990), S. 131-138 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Structure of Tetrafluoro(η5-pentamethylcyclopentadienyl) Niobium and Tetrafluoro(η5-cyclopentadienyl) NiobiumA facile preparation method for (η5-C5Me5)NbF4 3 and (η5-C5H5)NbF4 4 is reported by using AsF3 as a fluorinating agent. Single crystals obtained from AsF3 contain the solvent molecule as well as HF. The composition of the crystal is [(η5-C5Me5)NbF4(AsF3)2]2 · [(η5-C5Me5)NbF4(HF)AsF3]2 5. The X-ray crystal structure of 5 will be reported. 5 crystallizes triclinic with one furmula in the space group P1 and lattice constants a = 843.1(4), b = 1154.9(6), c = 1910.2(10) pm, α = 91.68(3)°, β = 99.30(3)°, γ = 104.44(2)°.
    Notes: Es wird über eine einfache Darstellung von (η5-C5Me5)NbF4 3 und (η5-C5H5)NbF4 4 durch Chlor-Fluor Austausch mittels AsF3 berichtet. 3 kristallisiert mit AsF3 und HF als [(η5-C5Me5)NbF4(AsF3)2]2 · [(η5-C5Me5)NbF4(HF)AsF3]2 5 aus. Die Einkristall Röntgenstrukturanalyse von 5 wird mitgeteilt. 5 kristallisiert triklin in der Raumgruppe P1 mit den Gitterkonstanten a = 843,1(4), b = 1154,9(6), c = 1910,2(10) pm und α = 91,68(3)°, β = 99,30(3)°, γ = 104,44(2)° mit einer Formeleinheit in der Elementarzelle.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19905800116
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  • 2
    Electronic Resource
    Electronic Resource
    Substitutionsreaktionen an (η5-C5Me5)TaF4. Darstellung von Benzamidinatokomplexen der Form (η5-C5Me5)TaF3[(NSiMe3)2C-Ar]. Kristallstruktur von (η5-C5Me5)TaF3[(NSiMe3)2 C—C6H4—OMe] (1990)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 583 (1990), S. 124-132 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Substitution Reactions at (η5-C5Me5)TaF4. Preparation of Benzamidinato Complexes of the Type (η5-C5Me5)TaF3[(NSiMe3)2C—Ar]. X-Ray Crystal Structure Analysis of (η5-C5Me5)TaF3[(NSiMe3)2C—C6H4—OMe]Cp*TaF4 (I) (Cp* = η5-C5Me5) reacts with the lithium salts of para-substituted benzamidinates (II-VII) under elimination of LiF to form the complexes Cp*TaF3[(NSiMe3)2C—C6H4—R] (VIII-XIII) (R = H, CF3, NMe2, Me, CN, OMe). The p-methoxy substituted complex has been investigated by X-ray crystal structure analysis. It shows pseudo trigonalbipyramidal environment of the tantalum atom.
    Notes: Cp*TaF4 (I) (Cp* = η5-C5Me5) reagiert mit den Lithiumsalzen verschiedener para-substituierter Benzamidinate (II-VII) unter Abspaltung von LiF zu den Komplexen Cp*TaF3[(NSiMe3)2C—C6H4—R] (VIII-XIII) (R = H, CF3, NMe2, Me, CN, OMe). Der p-methoxy-substituierte Komplex wurde mit Hilfe der Röntgenstrukturanalyse untersucht. Er zeigt eine pseudotrigonalbipyramidale Umgebung des Tantalatoms.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19905830115
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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