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  • Barium-bis[N,N′-bis(trimethylsilyl)benzamidinate] · DME · THF  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 1455-1461 
    ISSN: 0044-2313
    Keywords: Barium-bis[N,N′-bis(trimethylsilyl)benzamidinate] · DME · THF ; Benzamidinate ; X-ray Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Molecular Structure of Barium Bis[N,N′-bis(trimethylsilyl)benzamidinate] ° DME ° THFBarium bis[N,N′-bis(trimethylsilyl)benzamidinate] · thf · dme crystallizes in the monoclinic space group P21/n with a = 1 122.0(2), b = 2 190.7(4), c = 1 840.2(3) pm, β = 98.04(1)° and Z = 4 containing a metal center in a distorted monocapped trigonal prismatic surrounding. The barium dibenzamidinate moiety is sent with an angle of 120°, although this leads to different Ba—N distances of 273 and 282 pm originating from the interligand repulsion of the trimethylsilyl groups and the dme substituent. The 1,3-diazaallyl fragment with C—N bond lengths of 132 pm shows a delocalisation of the anionic charge.
    Notes: Barium-bis[N,N′-bis(trimethylsilyl)-benzamidinat] · DME · THF kristallisiert in der monoklinen Raumgruppe P21/n mit a = 1 122,0(2), b = 2 190,7(4), c = 1 840,2(3) pm, β = 98,04(1)° und Z = 4 mit einem Metallzentrum in einer einfach überdachten, verzerrt prismatischen Umgebung. Die Barium-dibenzamidinat-Substruktur ist mit einem Winkel von 120° gewinkelt, die zwei jeweils verschiedenen Ba—N-Abstände von 273 und 282 pm rühren von der sterischen Hinderung zwischen den Trimethylsilyl-Gruppen und dem DME-Liganden her. Das 1,3-Diazaallyl-Fragment weist mit C—N-Bindungslängen von 132 pm eine Delokalisation der anionischen Ladung auf.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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