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  • Articles  (163)
  • 2000-2004  (92)
  • 1970-1974  (21)
  • 1965-1969  (21)
  • 1960-1964  (29)
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  • Articles  (163)
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  • 1
    Electronic Resource
    Electronic Resource
    Lattice constant variation and complex formation in zincblende gallium manganese arsenide (2001)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 79 (2001), S. 1807-1809 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We perform high resolution x-ray diffraction on GaMnAs mixed crystals as well as on GaMnAs/GaAs and GaAs/MnAs superlattices for samples grown by low-temperature molecular-beam epitaxy under different growth conditions. Although all samples are of high crystalline quality and show narrow rocking curve widths and pronounced finite thickness fringes, the lattice constant variation with increasing manganese concentration depends strongly on the growth conditions: For samples grown at substrate temperatures of 220 and 270 °C, the extrapolated relaxed lattice constant of Zincblende MnAs is 0.590 nm and 0.598 nm, respectively. This is in contrast to low-temperature GaAs, for which the lattice constant decreases with increasing substrate temperature. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1403238
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  • 2
    Electronic Resource
    Electronic Resource
    Silane. VII. Saure Solvolyse von halogensubstituierten Trimethylsilanen (1964)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 331 (1964), S. 59-62 
    Details
    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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19643310110
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  • 3
    Electronic Resource
    Electronic Resource
    Über den Lösungsmitteleinfluß bei der Reduktion von Brom-silanen mit Magnesium (1968)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 362 (1968), S. 71-79 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The reduction of SiBr4 with Mg was investigated regarding its yields in various solvent mixtures and compared with the solubility of MgBr2 in the corresponding solvents. The results - confirmed by IR spectra - show that the effect of solvent isn't based on weakening of the Si—Br bond but on dissolving the formed MgBr2.
    Notes: Die Reduktion von SiBr4 mit Magnesium wurde in verschiedenen Lösergemischen bezüglich ihrer Ausbeute untersucht und mit der Löslichkeit von MgBr2 in entsprechenden Medien verglichen. Die Ergebnisse - unterstützt durch IR-Spektren - lassen erkennen, daß die Wirkung des Solvens nicht auf der Lockerung der Si—Br-Bindung, sondern auf der Lösung des MgBr2 beruht.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19683620112
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  • 4
    Electronic Resource
    Electronic Resource
    Silanole, XI Die Acidität der Silanole (1971)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 380 (1971), S. 283-292 
    Details
    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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19713800309
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  • 5
    Electronic Resource
    Electronic Resource
    Silanole. XII. IR-spektroskopische Untersuchungen an substituierten Triphenyl-silanolen (1972)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 391 (1972), S. 137-141 
    Details
    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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19723910207
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  • 6
    Electronic Resource
    Electronic Resource
    Harnstoff-Addukte von Halogen-silanenProfessor Leopold Wolf zum 65. Geburtstage am 23. November 1961 gewidmet (1961)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 312 (1961), S. 322-331 
    Details
    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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19613120512
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  • 7
    Electronic Resource
    Electronic Resource
    Polysilane. VI. Bildung von Polysilanen bei sterisch gehinderten Grignard-Reaktionen (1961)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 313 (1961), S. 107-116 
    Details
    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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19613130109
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  • 8
    Electronic Resource
    Electronic Resource
    Über Sulfatoborate (1962)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 314 (1962), S. 104-112 
    Details
    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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19623140113
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  • 9
    Electronic Resource
    Electronic Resource
    Silane. VI. Alkalische Solvolyse und Umlagerung von halogensubstituierten Trimethylsilanen (1964)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 331 (1964), S. 51-58 
    Details
    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.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19643310109
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  • 10
    Electronic Resource
    Electronic Resource
    Silane X. Alkalische Solvolyse von Alkoxysilanen (1968)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 358 (1968), S. 219-225 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Alkoxysilanes listed in „Inhaltsübersicht“ were solvolysed in alkaline ethanol/water solutions. The rates are discussed by means of substituent effects.
    Notes: Substanzen der Formel (C2H5)x(RO)3-xSiH [R = CH3-, C2H5-, n-C3H7-, s-C3H7-, n-C4H9-, i-C4H9-, s-C4H9-, t-C4H9-] [x = 0, 1, 2] wurden der alkalischen Solvolyse in Äthanol/Wasser unterworfen. Die Reaktionsgeschwindigkeiten werden an Hand von Substituenten-Effekten diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19683580504
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