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  • 1
    Electronic Resource
    Electronic Resource
    Synthese und Kristallstruktur des ionischen Tellurnitridchlorids [Te3N2Cl5(SbCl5)]+SbCl6- (1997)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 1375-1379 
    Details
    ISSN: 0044-2313
    Keywords: Tellurium Nitride Chloride ; Synthesis ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Crystal Structure of the Ionic Tellurium Nitride Chloride[Te3N2Cl5(SbCl5)]+SbCl6-The title compound has been prepared by the reaction of Te2NCl5 with antimony pentachloride in CH2Cl2 suspension. It is characterized by IR spectroscopy and by a crystal structure determination. Space group P21/c, Z = 4, lattice dimensions at -70°C: a = 1535.6, b = 1259.5, c = 1572.4 pm, β = 109.30°, R = 0.031. The compound forms an ionic pair with the central group of a (TeNCl)2 molecule in which the tellurium atoms are linked by the nitrogen atoms to give a planar Te2N2 four-membered ring. One of the nitrogen atoms is coordinated by a TeCl3+ unit, the other one by an antimony pentachloride molecule. According to the IR spectra a structure like [Te2N2Cl2(TeCl4)2] is proposed for Te2NCl5.
    Notes: Die Titelverbindung wird durch Reaktion von Te2NCl5 mit Antimonpentachlorid in Dichlormethan hergestellt und durch das IR-Spektrum und eine Kristallstrukturanalyse charakterisiert. Raumgruppe P21/c, Z = 4, Gitterkonstanten bei -70°C: a = 1535,6; b = 1259,5; c = 1572,4 pm, β = 109,30°; R = 0,031. Die Verbindung bildet ein Ionenpaar, dessen Kation als zentrales Bauelement ein (TeNCl)2-Molekül enthält, in dem die Telluratome mit den Stickstoffatomen zu einem planaren Te2N2-Vierring verknüpft sind. Eines der N-Atome ist mit einem TeCl3+-Ion, das andere mit einem SbCl5-Molekül koordiniert. Aus dem Vergleich der IR-Spektren wird für Te2NCl5 eine Struktur gemäß [Te2N2Cl2(TeCl4)2] vorgeschlagen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19976230909
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  • 2
    Electronic Resource
    Electronic Resource
    [VCl3(NPPh3)(OPPh3)], ein Phosphaniminato-Komplex von Vanadium(IV) (1993)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 1023-1026 
    Details
    ISSN: 0044-2313
    Keywords: Phosphorane Iminato Complex of Vanadium(IV) ; Synthesis ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: [VCl3(NPPh3)(OPPh3)], a Phosphorane Iminato Complex of Vanadium(IV)The title compound has been prepared from vanadium tetrachloride and Me3SiNPPh3 in the presence of OPPh3 in CCl4 solution, forming orange-red, moisture sensitive crystals, which were characterized by an X-ray structure determination. Space group Cc, Z = 4, 2 560 observed unique reflections, R = 0.049. Lattice dimensions at 0°C: a = 1 018(1), b = 1 826(2), c = 1 859(2) pm, β = 93.65(9)° [VCl3(NPPh3)(OPPh3)] forms monomeric molecules, in which the vanadium atom is coordinated in a distorted square pyramidal fashion with the (NPPh3)- ligand in apical position. The three chlorine atoms and the oxygen atom of the OPPh3 molecule occupy the basal positions. The phosphorane iminato group V=N=PPh3 is nearly linear (bond angle VNP 161.4°), the bond lengths VN (169 pm) and PN (162 pm) correspond with double bonds.
    Notes: Die Titelverbindung entsteht aus Vanadiumtetrachlorid und Me3SiNPPh3 in Gegenwart von Triphenylphosphanoxid in CCl4. Die orangeroten, feuchtigkeitsempfindlichen Kristalle wurden durch eine röntgenographische Strukturanalyse charakterisiert: Raumgruppe Cc, Z = 4, 2 560 beobachtete unabhängige Reflexe, R = 4,9%. Gitterabmessungen bei 0°C: a = 1 018(1), b = 1 826(2), c = 1 859(2) pm, β = 93,65(9)°. [VCl3(NPPh3)(OPPh3)] bildet monomere Moleküle, in denen das Vanadiumatom eine verzerrte tetragonale Pyramide bildet mit dem (NPPh3)--Liganden in der Apicalposition. Die drei Chloratome und das O-Atom des OPPh3-Moleküls sind äquatorial angeordnet. Die Phosphaniminatogruppe V=N=PPh3 ist mit 161,4° nahezu gestreckt, die Abstände VN und PN entsprechen mit 169 und 162 pm Doppelbindungen.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19936190612
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    Paper (German National Licenses)
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