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  • Inorganic Chemistry  (24)
  • Occupational exposure
  • 1970-1974  (10)
  • 1960-1964  (14)
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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 331 (1964), S. 59-62 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The acid-catalysed solvolysis of (CH3)2(CH2X)SiH [X = Cl, Br, J], (CH3)2(CHX2)SiH [X = Cl] und (CH3)(CH2X)SiH [X = Cl] was determined in ethanol/water and the influence of substituents was compared by means of TAFTs constants σ*.
    Notes: Die säurekatalysierte Solvolyse von (CH3)2(CH2X)SiH [X = Cl, Br, J], (CH3)2(CHX2)SiH [X = Cl] und (CH3)(CH2X)SiH [X = Cl] wurde in Äthanol/Wasser gemessen und der Substituenteneinfluß mit den TAFT-Konstanten σ* verglichen.
    Additional Material: 2 Ill.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 380 (1971), S. 283-292 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The relative acidity of substituted triphenyl silanols [X - C6H4-]3Si -OH is measured by means of potentiometric titration. The substituent effect is well defined by σ0-constants(3).
    Notes: Durch potentiometrische Titration in nichtwäßrigen Lösungen wird die relative Acidität von substituierten Triphenyl-silanolen [X - C6H4 -]3Si - OH gemessen. Der Substituenteneinfluß kann durch die σ0-Konstante3 gut wiedergegeben werden.
    Additional Material: 3 Ill.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 391 (1972), S. 137-141 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Silanols. XII. IR vibrational study on substituted triphenyl silanolsFrequency, intensity and half-band width of the OH stretching vibration of substituted triphenyl-silanols (X—C6H4)3Si —OH have been measured, and band shift caused by the presence of a donor was determined. The results show good correlations with potentiometric data on the relative acidity of silanols and with σ°-constants of the substituents X.
    Notes: Es wurden die Bandenlage, die absolute Intensität und die Halbwertsbreite der O—H-Valenzschwingung von substituierten Triphenyl-silanolen (X—C6H4)3Si—OH sowie die Verschiebung der OH-Bande bei Zugabe eines Donors gemessen. Die Ergebnisse sind gut korrelierbar mit der potentiometrisch bestimmten relativen Acidität der Silanole und mit den σ°-Konstanten der Substituenten X.
    Additional Material: 3 Ill.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 312 (1961), S. 322-331 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: By reaction in a bomb tube several addition compounds of various halogenosilanes with urea, thiourea, N-methyl-urea N, N-dimethyl-urea and N-phenyl-urea could be prepared. From IR-spectra deductions about the linkage of these compounds were made.
    Notes: Durch Reaktion im Einschlußrohr konnten eine Reihe von Additionsverbindungen verschiedener Halogen-silane mit Harnstoff, Thioharnstoff, N-Methyl-harnstoff, N, N-Dimethylharnstoff und N-Phenyl-harnstoff dargestellt werden. Aus IR-Spektren wurden Schlußfolgerungen über den Bindungszustand dieser Addukte gezogen.
    Additional Material: 3 Ill.
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 313 (1961), S. 107-116 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The GRIGNARD reaction between silicon halides and alkyl-Mg-halides with steric hindering alkyl groups does not run in the usual manner. Thus from SiBr4 and secondary or tertiary butyl—MgBr only the corresponding butyl-tribromosilanes (C4H9)SiBr3 could be prepared in low yields. To a great extent, there are side reactions which produce silanes with Si—H-bonds by developing butene (C4H8) and high molecular polysilanes with, Si—Si-bonds by cleaving off octane (C8H18).
    Notes: Die Grignard-Reaktion zwischen Silicium-halogeniden und Alkyl-Mg-halogeniden mit sterisch hindernden Alkylgruppen verläuft anormal. So konnten aus SiBr4 und sekundärem oder tertiärem Butyl—MgBr nur die entsprechenden Butyl-tribrom-silane (C4H9)SiBr3 in geringen Ausbeuten gewonnen werden. Es finden in großem Umfange Nebenreaktionen statt, die unter Abspaltung von Buten(C4H8) zu Silanen mit Si—H-Bindungen, sowie unter Entwicklung von Octan (C8H18) zu hochmolekularen Polysilanen mit Si—Si-Bindungen führen.
    Additional Material: 1 Ill.
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 314 (1962), S. 104-112 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: By reaction of sulphates with boric acid and sulphur trioxide bis(sulphato)borates: MeI[B(SO4)2]2, MeII[B2O(SO4)2]2 and tris(sulphato)diborates: MeII[B2O(SO4)3], could be prepared. These substances are very hygroscopic and sensitive to hydrolysis. Probably they are ionic compounds with high-polymeric anions.
    Notes: Durch Umsetzung von Sulfaten mit Borsäure und Schwefeltrioxid wurden Bis-(sulfato)borate: MeI[B(SO4)2]2 und Tris(sulfato)diborate: MeII[B2O(SO4)3] gewonnen. Diese Substanzen sind stark hygroskopisch und äußerst hydrolyseempfindlich. Vermutlich handelt es sich um Salze mit hochpolymerem Anion.
    Additional Material: 1 Ill.
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 331 (1964), S. 51-58 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The substances (CH3)2(CH2X)SiH [X = Cl, Br, J], (CH3)2(CHX2)SiH [X = Cl] und (CH3) (CH2X)2SiH [X = Cl] were solvolysed in alkaline ROH/H2O solutions [R = CH3, C2H5, n-C3H7]. The extent of the simultaneous rearrangement caused by alkali was determined.
    Notes: Die Substanzen (CH3)2(CH2X)SiH [X = Cl, Br, J], (CH3)2(CHX2)SiH [X = Cl] und (CH3) (CH2X)2SiH [X = Cl] wurden der alkalischer Solvolyse in ROH/H2O-Lösungen [R = CH3, C2H5, n-C3H7] unterworfen und das Ausmaß einer gleichzeitig verlaufenden durch die alkalische Reaktion hervorgerufenen Umlagerung bestimmt.
    Additional Material: 3 Ill.
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 383 (1971), S. 314-320 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of CH3-SiCl3, Cl-CH2-SiCl3 and C6H5-SiCl3 with several β-diketones (diket-H). listed above, give compounds of the type [RSi(diket)2]+X-. The same products result from CH3-SiFCl2. The Si-F-bond is split by the complex formation in each case.
    Notes: Reaktionen von CH3-SiCl3, Cl-CH2-SiCl3 und C6H5-SiCl3 mit den β-Diketonen (diket-H) Acetylaceton (aeac-H), Benzoylaceton (bac-H) und Dibenzoylmethan (dbm-H) ergaben Verbindungen des Typs [RSi(diket)2]+X-(X-=Cl-, HCl2-, FeCl4 SnCl5 und Pikrat). Die gleichen Produkte entstanden beim Einsatz von CH3-SiFCl2. Die Si-F-Bindung wurde bei der Komplex-Bildung in jedem Falle gespalten.
    Additional Material: 1 Tab.
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 391 (1972), S. 27-37 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Silicon complexes. VI. Oxalatosilicates and oxalatogermanatesBy reaction of SiCl4(GeCl4) or diaryldichloro silanes (germanes) with Ag2C2O4 and quartary ammonium or phosphonium iodides, compounds of the following formulas were prepared: These products are resistant towards hydrolysis and were characterized by IR-spectra, conductivity and thermal decomposition. The compounds resulting from reaction of monoorganitrichloro silanes nearly correspond to the formula \documentclass{article}\pagestyle{empty}\begin{document}$$ ({\rm R}_{\rm 4} {\rm E)[RSi(C}_{\rm 2} {\rm O}_{\rm 4})_2] $$\end{document} and are extremely sensitive towards hydrolysis.
    Notes: Durch Reaktion von SiCl4(GeCl4) oder Diaryldichlorsilanen (-germanen) mit Silberoxalat und quartären Ammonium- oder Phosphoniumjodiden wurden Verbindungen folgender Zusammensetzung dargestellt: Diese hydrolysebeständigen Produkte wurden durch IR-Absorptionsspektren, Leitfähigkeitsmessungen und thermischen Abbau charakterisiert.Die bei Umsetzungen der Monoorganotrichlorsilane erhaltenen Verbindungen entsprechen etwa der Formulierung (R4E)[RSi(C2O4)2] und sind extreme hydrolyseempfindlich.
    Additional Material: 1 Ill.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 398 (1973), S. 293-300 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Stability of Aroxy-fluoro-silanes.Different possibilities for preparation of aroxy-fluoro-silanes (esp. substituted phenoxy-fluoro-silanes) are investigated. The reaction was proved as the best method of preparation. The aroxy-fluoro-silanes are disposed to dismutation reactions.
    Notes: Es werden verschiedene Möglichkeiten zur Darstellung von Aroxy-fluor-silanen (spez. substituierten Phenoxy-fluor-silanen) untersucht. Als beste Methode erwies sich die Reaktion Die Aroxy-fluor-silane neigen zu Dismutationsreaktionen.
    Additional Material: 2 Tab.
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