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  • azametalla-closo-dodecaboranes  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 621 (1995), S. 719-724 
    ISSN: 0044-2313
    Keywords: Undecahydroaza-nido-undecaborate(2-) ; azametalla-closo-dodecaboranes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Azametalla-closo-dodecaboraneAus nido-NB10H13 erhält man mit der doppelten Menge an K[BHEt3] das Azaborat K2[nido-NB10H11]. Das Anion [NB10H112-] ist isoelektronisch mit [C2B9H11]2-. Es reagiert mit [{η6-(C6R6)RuCl2}2] (R = H, Me), [{η5-(C5Me5)RhCl2}2] oder [Ni(PPh3)2Cl2] zu den Azametalla-closo-dodecaboranen MNB10H11 mit M = (C6Me6)Ru (2), (C6H6)Ru (3), (C5Me5)Rh (4) bzw. (Ph3P)2Ni (5). Aus K2[NB10H11] und CoCl2 läßt sich das Azametallaboran K[Co(NB10H11)2] (6) gewinnen, in welchem das Co-Atom sandwichartig von zwei [NB10H11]2--Ionen koordiniert wird. Vom Produkt 2 · CH2Cl2 liegt eine Röntgenstrukturanalyse vor. Die Produkte 2-6 lassen sich vom ikosaedrisch gebauten Anion [B12H12]2- dadurch ableiten, daß eine BH2--Einheit durch das isoelektronische Nitren NH und eine BH-Einheit durch das isolobale Metallkomplex-Fragment M ersetzt werden. Das N-Atom ist in den Clustergerüsten 2-6 jeweils sechsfach koordiniert.
    Notes: The azaborate K2[nido-NB10H11] is gained from nido-NB10H13 and K[BHEt3] in a 1:2 ratio. The anion [NB10H11]2-, which is isoelectronic with [C2B9H11]2-, reacts with [{η6-(C6R6) · RuCl2}2] (R = H, Me), [{η5-(C5Me5)RhCl2}2], or [Ni(PPh3)2Cl2] to give the azametalla-closo-dodecaboranes MNB10H11 with M = (C6Me6)Ru (2), (C6H6)Ru (3), (C5Me5)Rh (4), and (Ph3P)2Ni (5), respectively. The azametallaborane K[Co(NB10H11)2] (6), which contains a sandwich-type coordinated Co atom, is formed from K2[NB10H11] and CoCl2. The structure of 2 · CH2Cl2 was determined by X-ray diffraction. The products 2-6 can be derived from the icosahedral anion [B12H12]2- on replacing a BH2- moiety by the isoelectronic nitrene NH and a BH moiety by the isolobal metal-complex fragment M. The N atom is six-coordinated in the cluster skeletons 2-6.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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