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  • Articles: DFG German National Licenses  (20)
  • 1970-1974  (20)
Source
  • Articles: DFG German National Licenses  (20)
Material
Years
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 104 (1973), S. 1453-1456 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The title reaction (compare equ. 1) leads with yields of about 40% to the so far unknown compounds I to VI with various substituents on the N atoms in positions 2/4- and in 6. Some physical data are recorded in Table 1.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 104 (1973), S. 1457-1463 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The 1-chloro-3-(di)alkylamino-disilazanes1–18 were prepared according to equ. (2), characterized in their properties (Tab. 1) and confirmed in their structure (Tab. 2, 3). They could be transformed easily into disiltriazanes (equ. 3), but not be condensed into cyclotri- or-tetrasilazanes.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 104 (1973), S. 1444-1452 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Compounds I-X of the sixmembered ring system PSi2N2O with phosphorus in different oxidation and bond numbers, collected in Schema 1, have been prepared for the first time and confirmed in their structure by elemental analysis as well as by infrared and1H- and31P-spectroscopy.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 104 (1973), S. 1465-1472 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract At 0° dimethyldichlorosilane reacts with cooled gaseous ammonia in strictly stoichiometrical proportions (2∶3) according to the steps1→2→3 only (scheme 1) affording tetramethyldichlorodisilazane in high yield. The analogous reaction with gaseous methylamine affords pentamethyldichlorodisilazane via the steps1→4→5 (scheme 2). All earlier preparations of the two compounds have been much more complex. Ethylamine, in contrast, gives only dimethylchloro-ethylaminosilane. At room temperature its condensation and ethylaminolysis reactions are comparably fast, resulting in an inseparable mixture of 1.3-dichloro- and 1-chloro-3-ethylamino-2-ethyl-1.1.3.3-tetramethyldisilazane.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 105 (1974), S. 209-212 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract For the first time, preparation of cyclotrisilazanes with different substituents in positions N, N′ and N″ has been achieved, via equations1–3. Analytical and physical data of the new compounds are given in tables 1 and 2.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 105 (1974), S. 1233-1239 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The title compound1 b, formed by equation (1), reacts with different amines and metallated amines via equations (2), (3) and (4) to give the compounds2–7, partially with the formerly unknown SiN-skeletons (NSi)3NSi2 and (NSi)3N(SiN)3.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 105 (1974), S. 1240-1248 
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Metallation of the title compound via equ. (1) leads to the lithium and sodium derivatives1 and2 respectively.2 can be reacted with chlorosilanes forming3–5. Amination of4 gives6–8. The formation of7 via equ. (5) is discussed. Attempts to synthesize compoundsG andE failed.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 385 (1971), S. 164-176 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Decachloro-N,N′-bis(silyl)-cyclodisilazane (I), Cl10Si4N2, is formed via the reaction paths of scheme 1. The total substitution of the Cl atoms was achieved by methyllithium (→ II), methanol (→ III), ethanol (→ IV) or methylamine (→ V), whereas dimethylamine only reacted to (VI), and diethylamine to (VII). The stepwise substitution of the Cl atoms was not possible, in this case only mixtures of I with mono-, di- or trisubstituted products were received which gave further dismutation reactions on attempting their isolation. (1) was easily cleaved by HCl, but only (Cl3Si)2NH did result and not, as was hoped, N(SiCl3)3.
    Notes: Dekachlor-N,N′-bis(silyl)-cyclodisilazan (I), Cl10Si4N2, bildete sich auf den Reaktionswegen des Schema 1. Die Totalsubstitution der Cl-Atome gelang mit Methyllithium [→ me10Si4N2 (II)], Methanol [→ (meO)10Si4N2 (III)], Äthanol [→ (etO)10Si4N2 (IV)] oder Methylamin [→ (meNH)10Si4N2 (V)], während mit Dimethylamin nur (me2N)9ClSi4N2 (VI), mit Diäthylamin nur (et2N)6Cl4Si4N2 (VII) entstand. Versuche zur gezielten stufenweisen Substitution der Cl-Atome ergaben weitgehend Gemische des Ausgangsprodukts mit ein-, zwei- oder dreifach substituierten Derivaten, die sich bei Aufarbeitungsversuchen einer Isolierung durch weitere Dismutationen entzogen. Die HCl-Spaltung von I führte nicht wie erhofft zu N(SiCl3)3, sondern nur zu 2 (Cl3Si)2NH.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Novel Inorganic Ring Systems. XX. Tricyclic Inorganic Ring Systems with Four and Five Different ElementsThe four ring systems D, E, F and G unknown solong, could be synthesized according to Schema 1. Their structure was confirmed by mass, proton resonance, and infrared spectroscopy. The single compounds are characterized by a deep green colour and an unusually high solubility in indifferent organic solvents.
    Notes: Die vier bisher unbekannten Ringsysteme D, E, F und G konnten nach den Angaben des Schema 1 synthetisiert werden. Ihre Struktur wurde durch Massen-, NMR- und IR-Spektren sowie Röntgenstrukturanalysen sichergestellt. Die einzelnen Verbindungen zeichnen sich durch eine tiefgrüne Farbe und ungewöhnlich hohe Löslichkeit in inerten organischen Lösungsmitteln aus.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 383 (1971), S. 249-254 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 1,5-Bis(alkylamino)octamethyltrisildiazanes react after metallation with element dichlorides according to reaction 3a and 3b respectivcly by forming ring compounds. In this way 1,2,8-organylsubstituted permethylated cyclotetrasilazanes (I, II) and inorganic eightmembered ringsystems BSi3N4. PSi3N4 and GeSi3N4, were prepared for the first time.
    Notes: 1,5-Bis(alkylamino)oktamethyltrisildiazane reagieren nach Metallierung mit Elementdichloriden über Rk. 3a oder 3 b unter Ringschluß. Neben 1,2,8-organylsubstituierten, permethylierten Cyclotetrasilazancn (I, II) ließen sich so erstmalig anorganische Achtringsysteme BSi3N4. PSi3N4 und GeSi3N4 darstellen.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
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