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  • 1
    Electronic Resource
    Electronic Resource
    Beryllium nitrogen compounds. 1. Monomeric bis(amido)beryllium compounds (1983)
    s.l. : American Chemical Society
    Inorganic chemistry 22 (1983), S. 2700-2703 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00161a012
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  • 2
    Electronic Resource
    Electronic Resource
    Pentakoordinierte Elemente der 4. Hauptgruppe mit vier organischen Resten (1989)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 101 (1989), S. 945-946 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19891010721
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  • 3
    Electronic Resource
    Electronic Resource
    (Ligand)Übergangsmetall-π-Komplexe organosubstituierter 2,5-Dihydro-1,2,5-azasilaborole  -  Herstellung und Charakterisierung in Lösung (1989)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 122 (1989), S. 2055-2073 
    Details
    ISSN: 0009-2940
    Keywords: Transition metal η4-organoboranes ; endo/exo-η4-Complexation ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: (Ligand)Transition metal π-Complexes of Organosubstituted 2,5-Dihydro-1,2,5-azasilaboroles - Preparation and Characterization in SolutionThe heterocycles 4, 5, 7, and 5a, η6-Cr(CO)3 react thermally or photochemically with suitable organometallic compounds to form the η4-complexes (OC)4M-4a (M = Cr, Mo), (OC)3Fe-4f, j, the exo/endo compounds (OC)3Fe-4c, -7c, d, CpCo-4h, j, CpCo-5a-η6-Cr(CO)3, endo/exo-CpCo-7c, exo-CpCo-7d, (OC)3Ru-4a, (acac)Rh-4a, [ClRh-4a]2 and (C2H4)ClIr-4a. The cyclodiastereotopic heterocycles 4c, 7c, and 7d are complexed diastereoselectively at the ligand transition metal fragments [(C2H4)Rh-η1η4-3a]2 is obtained from (Na-3a) and [(C2H4)2RhCl]2. Reaction of the vinyl compounds 4b and 5b leads to η4-complexation at the endo-C = C—B = N- and/or the exo-C = C—C = C-grouping. All π-complexes are characterized by mass spectrometry and multinuclear NMR spectroscopy (1H, 11B, 13C, 14,15N, 17O, 29Si, 59Co, 103Rh). Their bondings are discussed on the basis of their NMR data.
    Notes: Aus den Heterocyclen 4, 5 und 7 sowie 5a, η6-Cr(CO)3 werden durch thermische oder photochemische Umsetzung mit geeigneten Organometall-Verbindungen folgende η4-Komplexe erhalten: (OC)4M-4a (M = Cr, Mo), (OC)3Fe-4f, j, die exo/endo-Komplexe (OC)3Fe-4c, -7c, d, CpCo-4h, j, CpCo-5a-η6-Cr(CO)3, endo/exo-CpCo-7c, exo-CpCo-7d, (OC)3Ru-4a, (acac)Rh-4a, [ClRh-4a]2 und (C2H4)ClIr-4a. Die cyclodiastereotopen Heterocyclen 4c, 7c und 7d komplexieren am Ligand-Übergangsmetall diastereoselektiv. Aus (Na-3a) und [(C2H4)2RhCl]2 erhält man [(C2H4)Rh-η1η4-3a]2. Die Vinyl-Verbindungen 4b und 5b führen zu η4-Komplexen unter Anbindung der Metall-Atome an die endo-C = C—B = N- und/oder exo-C = C—C = C-Gruppierung. Sämtliche π-Komplexe sind massenspektrometrisch und mittels Multikern-NMR-Spektroskopie (1H, 11B, 13C, 14,15N, 17O, 29Si, 59Co, 103Rh) charakterisiert. Ihre Bindungsverhältnisse werden aufgrund der NMR-Daten diskutiert.
    Additional Material: 8 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19891221105
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  • 4
    Electronic Resource
    Electronic Resource
    Beryllium-Stickstoff-Verbindungen, 2. Darstellung und Struktur von Beryllium-bis(dialkyldithiocarbamaten) (1988)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 121 (1988), S. 1711-1713 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Beryllium-Nitrogen Compounds, 21). - Synthesis and Structure of Beryllium Bis(dialkyldithiocarbamates)The insertion of CS2 into the BeN bonds of bis(diisopropylamino)beryllium (1) yields bis(diisopropyldithiocarbamato)beryllium (2). Its Be atom shows a bisphenoidal coordination by four sulfur atoms as determined by an X-ray structure analysis. The same compound is formed slowly and at elevated temperature from dimeric bis(diisopropylamino)beryllium (3) and CS2. In contrast, all Me2N bridge bonds remain intact in the reaction of trimeric Be(NMe2)2 (5) with CS2; only the two terminal Me2N groups add CS2. The resulting (Me2NCS2)Be(NMe2)2Be(NMe2)2Be(S2CNMe2) (6) contains only tetracoordinated beryllium atoms.
    Notes: Die Insertion von CS2 in die BeN-Bindungen von Bis(diisopropylamino)beryllium (1) liefert Bis(diisopropyldithiocarbamato)-beryllium (2), dessen Be-Atom gemäß Röntgenstrukturanalyse bisphenodial von vier Schwefelatomen koordiniert wird. In langsamer Reaktion entsteht 2 bei höherer Temperatur auch aus dimerem Bis(diisopropylamino)beryllium (3). Im Gegensatz dazu bleiben bei der Umsetzung von CS2 mit trimerem Be(NMe2)2 (5) die Me2N-Brücken intakt, und es reagieren nur die beiden terminalen Me2N-Gruppen. Im resultierenden (Me2NCS2)Be(NMe2)2Be(NMe2)2Be(S2CNMe2) (6) sind alle Berylliumatome tetrakoordiniert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19881211003
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  • 5
    Electronic Resource
    Electronic Resource
    Beryllium-Stickstoff-Verbindungen, 3. Über die Reaktion von Berylliumbis(dialkylamiden) mit Kohlendioxid: (Dialkylcarbamoyloxy)beryllium-Verbindungen (1988)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 121 (1988), S. 1715-1717 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Beryllium-Nitrogen Compounds, 3. - The Reaction of Beryllium Bis(dialkylamides) with Carbon Dioxide: (Dialkylcarbamoyloxy)beryllium CompoundsCO2 reacts with monomeric beryllium bis(dialkylamides) to yield bis(dialkylcarbamoyloxy)beryllium compounds 2 containing a tetracoordinate beryllium atom. CO2 insertion into the BeN bonds of [Be(NiPr2)2]2 and [Be(NMe2)2]3 occurs only at the terminal BeN bonds. The products contain tetracoordinate Be atoms only. [BeNiPr2(O2CNiPr2)]2 (4) reacts with CO2 in boiling toluene with formation of 2a, which decomposes at 〉 150°C into tetranuclear Be4O(O2CNiPr2)6 (7).
    Notes: CO2 reagiert mit monomeren Berylliumbis(dialkylamiden) 1 zu Bis(dialkylcarbamoyloxy)beryllium-Verbindungen 2 mit tetrakoordiniertem Be-Atom. Bei [Be(NiPr2)2]2 und [Be(NMe2)2]3 schiebt sich CO2 nur in die terminalen BeN-Bindungen ein. Dadurch erreichen alle Be-Atome in den Produkten Tetrakoordination. [BeNiPr2(O2CNiPr2)]2 (4) reagiert in siedendem Toluol mit CO2 zu 2a, das sich bei Temperaturen 〉 150°C in die vierkernige Verbindung Be4O(O2CNiPr2)6 (7) zersetzt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19881211004
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  • 6
    Electronic Resource
    Electronic Resource
    Pentacoordinated Elements of the 4th Main Group with Four Organic Residues (1989)
    Weinheim : Wiley-Blackwell
    Angewandte Chemie International Edition in English 28 (1989), S. 918-920 
    Details
    ISSN: 0570-0833
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/anie.198909181
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