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  • 1
    Electronic Resource
    Electronic Resource
    On the formation of permethylcyclopolysilanes in the würtz-type reaction of Me2SiCl2: The influence of solvent and complexing agent (1995)
    Springer
    Journal of inorganic and organometallic polymers and materials 5 (1995), S. 163-168 
    Details
    ISSN: 1572-8870
    Keywords: Polysilanes ; cyclopolysilanes ; solvated electron ; crown ether
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Permethylcyclopolysilanes are most often prepared by Würtz-type coupling of Me2SiCl2 with Na K alloy in THI: When nonpolar solvents like benzene were used, only linear polysilanes (Me2Si)n were produced, but the addition of a catalytic amount of crown ether 18-crown-6 was found to increase significantly the amount of cyclic oligomers. The ratio of (Me2Si)6 to (Me2Si)5 decreased from 18:1 to 6:1 in the presence of crown ether in a typical synthesis in THF. An explanation based on solvated electron theory has been proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01058144
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  • 2
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Silicium-Schwefel-Verbindungen. XVII. Darstellung von Trialkoxysilanolen aus Trialkoxysilanthiolen (1974)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 403 (1974), S. 186-192 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Silicon-Sulphur Compounds. XVII. Preparation of Trialkoxysilanols from TrialkoxysilanethiolsThe hydrolysis of trialkoxysilanethiols in neutral, basic and acidic solutions was investigated and an efficient way for preparation of trialkoxysilanols was elaborated. Some trialkoxysilanols were obtained with a very good yield.
    Notes: Die Hydrolyse von Trialkoxysilanthiolen in neutralen, alkalischen und sauren Lösungen wurde untersucht und ein ergiebiger Weg zur präparativen Darstellung von Trialkoxysilanolen ausgewertet. Einige Trialkoxysilanole wurden mit sehr guter Ausbeute erhalten.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19744030214
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  • 3
    Electronic Resource
    Electronic Resource
    Darstellung und spektroskopische Eigenschaften von Alkoxyaminosilanen (RO)nMe3-nSiNHC6H4X (1983)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 503 (1983), S. 224-230 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation and Spectroscopic Properties of Alkoxyaminosilanes (RO)nMe3-nSiNHC6H4XBy reaction of chlorosilanes with anilines and aminolysis of silylamines 22 new alkoxyaminosilanes of general formula (RO)nMe3-nSiNHC6H4X, n = 0, 1, 2, 3 have been prepared. Their IR und 1H-NMR spectra were measured and the influence of variabel polarizability effects of the (RO)nMe3-nSi groups on the Hammett's correlations of Δv and δ of the N—H proton were discussed.
    Notes: Durch Reaktion von Chlorsilanen mit Anilin-Derivaten und durch Umaminierung von Silylaminen wurden Alkoxyaminosilane der Reihen (RO)nMe3-nSiNHC6H4X, n = 0, 1, 2, 3, darunter 22 neue Verbindungen, erhalten. Ihre IR- und 1H-NMR-Spektren wurden vermessen, die N—H-Aciditäten ermittelt und der Einfluß der variablen Polarisierbarkeitseffekte der (RO)nMe3-nSi-Gruppierung auf die Hammettschen Beziehungen von Δv und δ der N—H-Protonen diskutiert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19835030824
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  • 4
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Silicium-Schwefel-Verbindungen. XXIX. 29Si-NMR-Untersuchungen (1984)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 508 (1984), S. 201-207 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Silicon-Sulphur Compounds. XXIX. 29Si-N.M.R. InvestigationsThree series of silicon-sulphur compounds (RO)3SiSR′ (I), (i-PrO)4-nSi(SEt)n (II) and cyclic Si—S compounds (III) were prepared, some of them at the first time and their 29Si-N.M.R. spectra were measured. In the series of trialkoxysilylthio derivatives (I) were the steric and inductive effects of the RO and R'S groups evaluated. In the series II were the 29Si-N.M.R. chemical shifts related to the relative paramagnetic screening constants σ* and netto charge at the silicon atom q(Si) using the EN-quantum-chemical model discussed. In the series III were the shift contribution of the (SiS)2 and 1-sila-2,5-dithiacyclopentan rings determined.
    Notes: Drei Reihen von Silicium-Schwefel-Verbindungen: (RO)3SiSR'(I), (i-PrO)4-nSi(SEt)n (II) und cyclische Si—S-Verbindungen (III) wurden dargestellt, davon einige erstmalig, und ihre 29Si-NMR-Spektren vermessen. In der Reihe der Trialkoxysilylthio-Derivate (I) wurden die sterischen und induktiven Wirkungen der RO- und R'S-Gruppen abgeschätzt. In der Reihe II wurden die 29Si-NMR-chemischen Verschiebungen in Abhängigkeit von den relativen paramagnetischen Abschirmungskonstanten σ* und der Nettoladung am Silicium q(Si) im Rahmen des EN-quantenchemischen Modells diskutiert. In der Reihe III wurden die Beiträge des (SiS)2-und 1-sila-2,5-dithia-cyclopentan-Rings zur chemischen Verschiebung ermittelt.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19845080129
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  • 5
    Electronic Resource
    Electronic Resource
    Elektronische und sterische Effekte in 29Si-NMR-Spektren von Amino-substituierten Silanen (1985)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 521 (1985), S. 173-182 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Electronic and Steric Effects in 29Si N.M.R. Spectra of Amino-substituted SilanesCompounds of three series of amino-substituted silanes, MenSi(NR′R″)4 - n′, Me3-n (RO)nSiNR′R″, and (RO)nSi(NR′R″)4 - n, (n = 0 ÷ 3), were prepared and characterized.29Si N.M.R. spectra have been measured. The electronic and steric shift contributions of the NR′R″ groups are given and discussed on the basis of a quantum-chemical model.The mass spectra also have been recorded and the fragmentation schemes for silanes multi substituted with amino groups are presented.
    Notes: Verbindungen von drei Reihen aminosubstituierter Silane MenSi(NR′R″)4 - n′, Me3 - n(RO)nSiNR′R″ und (RO)nSi(NR′R″)4 - n (n = 0÷3) wurden erhalten und charakterisiert.29Si—NMR Spektren wurden aufgenommen. Die elektronischen und sterischen Verschiebungsbeiträge dr NR′R′-Gruppe wurden ermittelt und im Rahmen eines quantenchemischen Modells diskutiert. die Massenspektren wurden aufgenommen und Zerfallsmuster für mehrfach mit Aminogruppen substituierte Silane angegeben.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19855210220
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  • 6
    Electronic Resource
    Electronic Resource
    Untersuchungen über die Alkoholyse des SiS2. VI. Di-t-butoxysilandithiolVorbericht: Z. anorg. allg. Chem. 388, 299 (1972). (1972)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 389 (1972), S. 302-306 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: By alcoholysis of silicondisulphide the di-t-butoxysilanedithiol was obtained. This is the first compound with two SH groups bonded to silicon.
    Notes: Ein erstmalig dargestellter Vertreter der bisher unbekannten Silandithiole, Di-t-butoxysilandithiol, wurde durch Alkoholyse des Siliciumdisulfids erhalten und in reinem Zustand isoliert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19723890310
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  • 7
    Electronic Resource
    Electronic Resource
    Untersuchungen über die Alkoholyse des SiS2. VIII Äthoxy-2,6-dimethylphenoxysilane (1973)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 396 (1973), S. 108-112 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Studies on the Alcoholysis of SiS2. VIII. Ethoxy-2,6-dimethylphenoxysilanesThe reactions of 2,6-dimethylphenol and ethylalcohol with SiS2 and SiCl4 was investigated. Three new esters: ethoxy-2,6-dimethylphenoxysilanes were obtained.
    Notes: Die Reaktion von 2,6-Dimethylphenol und Äthanol mit SiS2 und SiCl4 wurde untersucht. Drei neue Orthokieselsäureester: Äthoxy-2,6-dimethyl- phenoxysilane, wurden erhalten.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19733960113
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  • 8
    Electronic Resource
    Electronic Resource
    Untersuchungen über die Alkoholyse des SiS2. X Tri(2,6-dimethylphenoxy)silanthiol und Tetra(2,6-dimethylphenoxy)cyclodisilthian (1973)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 397 (1973), S. 69-73 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Studies on the Alcoholysis of SiS2.X.Tri(2,6-dimethylphenoxy) silanethiol and Tetra(2,6-dimethylphenoxy)cyclodisilthianeBy reaction of Silicondisulphide with 2,6-dimethylphenol the first members of the aryloxysilanethiols and aryloxycyclodisilthianes were obtained.
    Notes: Durch Reaktion von Siliciumdisulfid mit 2,6-Dimethylphenol wurden erstmalig Vertreter der Triaryloxysilanthiole und Tetraaryloxycyclodisilthiane erhalten.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19733970111
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  • 9
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Silicium-Schwefel-Verbindungen. XIII Die Reaktion von Triphenylsilanthiol mit Alkoholen und Phenolen (1973)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 397 (1973), S. 91-96 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Silicon-Sulphur Compounds. XIII. Reaction of Triphenylsilanethiol with Alcohols and PhenolsBy alcoholysis of Triphenylsilanethiol several Triphenylorganoxysilanes were obtained and tested also by means of chromatography.
    Notes: Durch Alkoholyse von Triphenylsilanthiol wurden mehrere Triphenylorganoxysilane erhalten und auch chromatographisch geprüft.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19733970114
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  • 10
    Electronic Resource
    Electronic Resource
    Die Solvolyse von Trialkoxy-acetoxy-silanen in i-Propanol (1976)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 419 (1976), S. 283-288 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Solvolysis of Trialkoxy-acetoxy- Silanes in i-PropanolTrialkoxy-acetoxy-silanes (RO)3Si—O—CO—CH3 [R = i-C3H7—, s-C4H9—] are solvolysed in benzene/i-propanol-mixtures. Rates of CH3COOH formation are investigated in order to compare them with results of R3Si—O—CO—CH3 i-propanolysis.
    Notes: Trialkoxy-acetoxy-silane (RO)3Si—O—CO—CH3 [R = i-C3H7—, s-C4H9—] werden in Benzol/i-Propanol-Gemischen solvolysiert. Die Geschwindigkeiten der CH3COOH-Bildung werden untersucht, um Vergleiche mit Ergebnissen der i-Propanolyse von R3Si—O—CO—CH3 zu ermöglichen.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19764190308
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