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  • 1
    ISSN: 0044-2313
    Keywords: Organometallic Nitrido Phosphoraneiminato Complex of Rhenium(VI) ; Synthesis ; X-ray structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structure of [ReNCl(NPPh2C6H4)]2 · [Ph3PNH2]Cl · CH3CN, a Rhenium Organic Nitrido Phosphoraneiminato ComplexThe title compound is synthesized by the reaction of ReNCl4 with Me3SiNPPh3 in boiling acetonitrile, forming colourless crystals, which are characterized by an X-ray structure determination. Space group P1, Z = 2, 4 037 observed unique reflections, R = 0.043. Lattice dimensions at 19°C: a = 1 005.5; b = 1 695.2; c = 1 744.7 pm, α = 105.86°; β = 101.49°; γ = 104.45°. The structure consists of dimeric molecules [ReNCl(NPPh2C6H4)]2, triphenylphosphorane ammoniumchloride and included acetonitrile molecules. In the nitrido phosphoraneiminato complex the rhenium atoms are μ2-bridged via the N-Atoms of the phosphoraneiminato ligands. Because of this bridging and a Re—Re bond, one terminal nitrido ligand, one terminal chloro ligand, and a Re—C bond of an -C-atom of one phenylene group of Re-atoms attain co-ordination number six.
    Notes: Die Titelverbindung entsteht bei der Reaktion von ReNCl4 mit Me3SiNPPh3 in siedendem Acetonitril in Form farbloser Kristalle, die durch eine röntgenographische Strukturanalyse charakterisiert wurden. Raumgruppe P1, Z = 2, 4 037 beobachtete unabhängige Reflexe, R = 0,043. Gitterabmessungen bei 19°C: a = 1 005,5; b = 1 695,2; c = 1 744,7 pm, α = 105,86°; β = 101,49°; γ = 104,45°. Die Struktur besteht aus dimeren Molekülen [ReNCl(NPPh2C6H4)]2, Triphenylphosphanammoniumchlorid und eingelagerten Acetonitrilmolekülen. In dem Nitrido-Phosphaniminatokomplex sind die Rheniumatome über die N-Atome der Phosphaniminatoliganden μ2-verbrückt. Die Re-Atome erreichen dadurch sowie durch eine Re—Re-Bindung, durch je einen terminalen Nitrido- und Chloroliganden und durch eine Re—C-Bindung eines -C-Atoms einer Phenylengruppe die Koordinationszahl sechs.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 974-980 
    ISSN: 0044-2313
    Keywords: 1λ5,3λ5-diphosphete ; (phosphonioalkinyl)(tetracarbonyl)iron ; acyl(tetracarbonyl)iron ; nmr, mass, ir spectra ; X-ray structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: A (Phosphonioalkinyl)- and an Acetyl(tetracarbonyl)ironFrom the reaction of 1,1,3,3-tetrakis(dimethylamino)-1λ5,3λ5-diphosphete, 1, and Fe(CO)5 {[bis(dimethylamino)phosphoryl-methyl]-bis(dimethylamino)phosphonioethinyl}(tetracarbonyl)iron, 4, and {1,1,3,3-tetrakis(dimethylamino)-1,4-dihydro- 1λ5,3λ5-[1,3]diphosphetium-2-carbonyl}(tetracarbonyl)-iron, 5, can be isolated as crystalline products. The nmr, mass and ir spectra of the two compounds as well crystal and molecular structures of 4 are reported. The bonding situation in compounds 4 and 5 are discussed in detail.
    Notes: Aus dem Reaktionsgemisch von 1,1,3,3-Tetrakis(dimethylamino)-1λ5,3λ5-diphosphet, 1, und Fe(CO)5 können {[Bis(dimethylamino)phosphoryl-methyl]-bis(dimethylamino)phosphonioethinyl}(tetracarbonyl)eisen, 4, und{1,1,3,3-Tetrakis(dimethylamino)-1,4-dihydro-1λ5,3λ5-[1,3]diphosphetium-2-carbonyl}(tetracarbonyl)eisen, 5, als kristalline Produkte isoliert werden. Die NMR-, Massen- und IR-Spektren der beiden Verbindungen werden mitgeteilt. Von 4 konnten die Kristall-und Molekülstruktur ermittelt werden. Die Bindungsverhältnisse in 4 und 5 werden eingehend diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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