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  • 1
    ISSN: 0022-328X
    Keywords: Crystal structure ; Cyclopentadienyl ; Group 5 ; Niobium
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Crystal and Molecular Structure of Tris(diethyldithiocarbamato)dimethylphenylphosphinetechnetium (III)The title compound Tc(S2CNEt2)3(Me2PhP) I has been prepared by the reaction of TcCl3(Me2PhP)3 with NaS2CNEt2. The crystal structure of I has been determined by single-crystal X-ray diffraction methods at room temperature. Crystals are rhombic, space group P212121, with a = 8.708(1), b = 12.012(1), c = 29.626(3) Å and Z = 4. The compound consists of discrete I molecules. The technetium atom has a seven-coordinated environment which is best described as a distorted pentagonal bipyramid. The Tc - P distance (2.330(3) Å) is remarkably short compared with other technetium complexes with mono-dentate phosphine ligands.
    Notes: Die Titelverbindung Tc(S2CNEt2)3(Me2PhP) I wurde durch Reaktion von TcCl3(Me2PhP)3 mit NaS2CNEt2 dargestellt und ihre Kristall- und Molekülstruktur durch Röntgenstrukturanalyse ermittelt. Die Kristalle sind rhombisch, Raumgruppe P212121, mit a = 8,708(1), b = 12,012(1), c = 29,626(3) Å und Z = 4. Die Verbindung besteht aus diskreten monomeren Molekülen. Das Technetiumatom hat siebenfache Koordination, die am besten als geringfügig verzerrte pentagonale Bipyramide beschrieben werden kann. Die Tc - P-Bindungslänge (2,330(3) Å) ist bemerkenswert kurz im Vergleich zu anderen Technetiumkomplexverbindungen mit einzähnigen Phosphanen.
    Additional Material: 1 Ill.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 564 (1988), S. 129-134 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal and Molecular Structure of 15N-Nitridodichlorotris(dimethylphenylphenylphosphine)technetium(V)The title compound Tc15NCl2(Me2PhP)3 I has been prepared by the reaction of mer-TcCl3(Me2PhP)3 with Na15N3. The crystal structure of I has been determined by single crystal X-ray diffraction methods at room temperature. Crystals are orthorhombic, space group Pbca, with a = 16.663(1), b = 19.219(1), c = 16.769(1) Å and Z = 8. The technetium atom is six-coor-dinate. The coordination geometry is that of a distorted octahedron with 3 phosphine ligands in meridional positions. The strong trans influence of the nitrido ligand has been noted. The Tc—Cl length trans to N is 2.665(1) Å while those trans to P is 2.441(1) Å.
    Notes: Die Titelverbindung Tc15NCl2(Me2PhP)3 I wurde durch Reaktion von mer-TcCl3(Me2PhP)3 mit Na15N3 dargestellt und ihre Kristall- und Molekülstruktur durch Röntgenstrukturanalyse ermittelt. Die Kristalle sind orthorhombisch, Raumgruppe Pbca, mit a = 16,663(1), b = 19,219(1), c = 16,769(1) Å und Z = 8. Das Technetiumatom hat verzerrt oktaedrische Koordinationsgeometrie mit meridionaler Anordnung der Phosphine. Infolge des ausgeprägten trans-Effektes des Nitridoliganden ist der Tc—Cl-Bindungsabstand in trans-Stellung zum Nitridoliganden um 0,22 Å größer als jener, der sich in trans-Stellung zum Phosphinliganden befindet.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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