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  • 1
    Electronic Resource
    Electronic Resource
    Contributions to the chemistry of silicon-sulphur compounds - LV. Isosteric isobutyl(isopropoxy)silanethiols. Preparation and spectroscopic properties
    Amsterdam : Elsevier
    Journal of Organometallic Chemistry 378 (1989), S. 317-326 
    Details
    ISSN: 0022-328X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0022-328X(89)85359-8
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  • 2
    Electronic Resource
    Electronic Resource
    The reaction of isosteric isobutyl(isopropoxy)silanes ^iBu"n(^iPrO)"3"-"nSiH (n = 0-3) with allyl bromide in the presence of platinum compounds
    Amsterdam : Elsevier
    Journal of Organometallic Chemistry 393 (1990), S. 187-193 
    Details
    ISSN: 0022-328X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0022-328X(90)80197-8
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  • 3
    Electronic Resource
    Electronic Resource
    Sila-biperiden und endo-Sila-biperiden: Synthesen, Kristallstrukturen und antimuscarinische Eigenschaften
    Amsterdam : Elsevier
    Journal of Organometallic Chemistry 466 (1994), S. 15-27 
    Details
    ISSN: 0022-328X
    Keywords: Bioorganosilicon chemistry ; Muscarinic antagonist ; Muscarinic receptor subtype ; Sila-biperiden ; Silanol ; Silicon
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0022-328X(94)88024-7
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  • 4
    Electronic Resource
    Electronic Resource
    Sila-biperiden undendo-Sila-biperiden: Synthesen, Kristallstrukturen und antimuscarinische Eigenschaften
    Amsterdam : Elsevier
    Journal of Organometallic Chemistry 466 (1994), S. 15-27 
    Details
    ISSN: 0022-328X
    Keywords: Bioorganosilicon chemistry ; Muscarinic antagonist ; Muscarinic receptor subtype ; Sila-biperiden ; Silanol ; Silicon
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0022-328X(94)88024-7
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  • 5
    Electronic Resource
    Electronic Resource
    Contributions to the chemistry of silicon - sulphur compounds LVI. The imidazole catalyzed alcoholysis of the isosteric isobutyl(isopropoxy)silanethiols i-Bu"n(i-PrO)"3"-"nSiSH (n = 0-3)
    Amsterdam : Elsevier
    Journal of Organometallic Chemistry 386 (1990), S. 305-312 
    Details
    ISSN: 0022-328X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0022-328X(90)80003-I
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  • 6
    Electronic Resource
    Electronic Resource
    Komplexchemie P-reicher Phosphane und Silylphosphane. XIV. Phosphinophosphiniden tBu2P—P als Ligand in den Pt-Komplexen [η2-{tBu2P—P}Pt(PPh3)2] und [η2-{tBu2P—P}Pt(PEtPh2)2] (1997)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 1917-1924 
    Details
    ISSN: 0044-2313
    Keywords: Platinum complexes, tBu2P—P ; [η2-{tBu2P—P}Pt(PPh3)2] ; [η2-{tBu2P—P}Pt(PEtPh2)2] ; 1H-13C-, 31P-NMR Spectra ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Coordination Chemistry of P-rich Phosphanes and Silylphasphanes. XIV. The Phosphinophosphinidene tBu2P—P as a Ligand in the Pt Complexes [η2-{tBu2P—P}Pt(PPh3)2] and [η2-{tBu2P—P}Pt(PEtPh2)2][η2-{tBu2P—P}Pt(PPh3)2 1 and [η2-{tBu2P—P}Pt(PEtPh2)2] 2 are the first complex compounds of tBu2P—P 5. They are formed in the reaction of tBu2P—P = P(Me)tBu2 3 with [η2-{H2C = CH2}Pt(PPh3)2] 6 or [η2-{H2C = CH2}Pt(PEtPh2)2] 7, respectively. Compound 1 is less stable than 2 and reacts on to [η2-{tBu2P—P} Pt(PPh3)(PtBu2Me)] 10 with the coincidently formed tBu2PMe. The molecular structures of 1 and 2 were derived from their 1H and 31P-NMR spectra, 2 was additionally characterized by a X ray structure determination. 2 crystallizes in the monoclinic space group P21/n with a = 1222.36(7) pm, b = 1770.7(1) pm, c = 1729.7(1) pm, β = 108.653(6)°.
    Notes: [η2-{tBu2P—P}Pt(PPh3)2] 1 und [η2-{t Bu2P—P}Pt(PEtPh2)2] 2 sind die ersten Komplexverbindungen des tBu2P—P 5. Sie entstehen bei der Umsetzung von tBu2P—P = P(Me)tBu2 3 mit [η2-{H2C=CH2}Pt(PPh3)2] 6 bzw. [η2-{H2C = CH2}Pt(PEtPh2)2] 7 unter Abspaltung von tBu2PMe. Verbindung 2 ist beständiger als 1. Mit tBu2PMe bildet 1 das [η2-{tBu2P—P} Pt(PPh3)(PtBu2Mc)] 10. Bei der Umsetzung von 6 mit 3 entsteht ebenfalls 10, weil das bei der Bildung von 1 freiwerdende tBu2PMe mit 1 weiterreagiert. Die Strukturen von 1 und 2 sind über ihre 1H- und 31P-NMR-Spektren, die von 2 zusätzlich durch eine Röntgenstrukturanalyse gesichert. 2 kristallisiert monoklin in P21/n mit a = 1222,36(7) pm, b = 1770,1(1) pm, c = 1729,7(1) pm, β = 108,653(6)°.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19976231216
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  • 7
    Electronic Resource
    Electronic Resource
    Der thermische Zerfall des tBu2P—P=P(Me)tBu2Professor Rudolf Hoppe zum 75. Geburtstag gewidmet (1997)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 623 (1997), S. 1769-1773 
    Details
    ISSN: 0044-2313
    Keywords: Phosphinophosphinidene-phosphorane tBu2P—P=P(Me)tBu2 ; formation of tBu2PMe and the phosphinophosphinidene tBu2P—P ; 2,4-Bis(di-tert-butylphosphino)-1,2,3,4-tetraphosphabicyclo[1.1.0]butane P4(PtBu2)2 ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Thermal Decomposition of tBu2P—P=P(Me)tBu2The thermal decomposition of tBu2P—P=P(Me)tBu2 2 in C6H6 at 20°C is detectable after 10 h; tBu2PMe, (tBu2P)2PH and small amounts of the cyclotetraphosphanes P4(PtBu2)4 and P4(PtBu2)2 are formed. At 70°C (14 h) 83% of 2 are decomposed, and even 96% after 74 h. The main products are tBu2PMe (68%) and P4(PtBu2)4 (20%). With 2,3-dimethyl-1,3-butadiene as a trapping reagent tBu2PMe (62%) is still the main product, however, P4(PtBu2)4 is no longer found, but 1,2-bis(di-tert-butylphosphino)-4,5-dimethyl-1,2-diphosphacyclohexene-4 (22%) is formed instead. Also with cyclohexene tBu2PMe (78%) remains the major product besides P4(PtBu2)4 (9%) and small amounts of the trapping product 7-di-tert-butylphosphino-7-phosphabicyclo[4.1.0]heptane. Thus, the thermal decomposition of 2 at 70°C proceeds very similar to that of tBu2P—P=P(Br)tBu2 at -30°C and starts yielding and the phosphinophosphinidene tBu2P—P. In CH2Cl2 the decomposition of 2 includes the chlorination of the ylidic molecule.
    Notes: Die thermische Zersetzung von tBu2P—P=P(Me)tBu2 2 in C6H6 ist bei 20°C nach 10 h nachweisbar, wobei tBu2PMe, (tBu2P)2PH und geringe Mengen der Cyclotetraphosphane P4(PtBu2)4 und von P4(PtBu2)2 entstehen. Bei 70°C (14 h) sind 83% von 2 zerfallen, nach 75 h 97%. Hauptprodukte sind tBu2PMe (68%) und P4(PtBu2)4 (20%). In Anwesenheit des Abfangreagenzes 2,3-Dimethyl-1,3-butadien bleibt tBu2PMe (62%) Hauptprodukt, doch P4(PtBu2)4 wird nicht mehr gebildet, sondern es entsteht 1,2-Bis(di-tert-butylphosphino)-4,5-dimethyl-1,2-diphosphacyclohexen-4 (22%). Mit Cyclohexen ist tBu2PMe Hauptprodukt (78%) neben P4(PtBu2)4 (9%) und geringen Anteilen des Abfangproduktes 7-Di-tert-butylphosphino-7-phosphabicyclo[4.1.0]heptan. Damit entspricht der Zerfall von 2 bei 70°C weitgehend dem des tBu2P—P=P(Br)tBu2 bei -30°C und beginnt mit der Bildung von tBu2PMe und des Phosphinophosphinidens tBu2P—P. In CH2Cl2 läuft die Zersetzung von 2 über die Chlorierung und Zersetzung des Ylidgerüstes.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19976231118
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  • 8
    Electronic Resource
    Electronic Resource
    Darstellung und Strukturen einiger N-(Tri-t-butoxysilyl)anilin-Derivate (1994)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 620 (1994), S. 377-384 
    Details
    ISSN: 0044-2313
    Keywords: One-pot reactions of tri-t-butoxychlorosilane, K-t-butanolate and substituted anilines. Crystal structure analyses of N-(tri-t-butoxysilyl)-aniline, C18H33NO3Si ; N-(tri-t-butoxysilyl)-p-nitroaniline, C18H32N2O5Si ; N-Methyl-(N-tri-t-butoxysilyl)-p-nitroaniline C19H34N2O5Si ; N-(tri-t-butoxysilyl)-p-cyanoaniline, C19H32N2O3Si ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Formation and Structures of N-(tri-t-butoxysilyl)aniline CompoundsPara-substituted N-(tri-t-butoxysilyl)anilines (t-BuO)3SiNRC4H4X-p, R = H, CH3, with substituents of high electron affinity (X = CN, NO2) were prepared by a one-pot reaction of tri-t-butoxychlorsilane, potassium t-butanolate and substituted anilines. Corresponding compounds with substituents of low electron affinity (X = OMe, H) preferably were prepared by metalation of anilines with sodium amide. Four crystal structures were determined. N-(tri-t-butoxysilyl)-p-nitro-aniline, N-methyl-(N-tri-t-butoxysilyl)-p-nitroaniline and N-(tri-t-butoxysilyl)-p-cyanoaniline crystallize at 298 K monoclinically, N-(tri-t-butoxysilyl)aniline crystallizes orthorhombically.
    Notes: Derivate des para-substituierten N-(Tri-t-butoxysilyl)anilins (t-BuO)3SiNRC6H4X-p, R = H, CH3 mit Substituenten hoher Elektronenaffinität (X = CN, NO2) wurden nach einem neuen Eintopfverfahren aus Tri-t-butoxychlorsilan, Kalium-t-butanolat und dem entsprechend substituierten Anilin dargestellt. Für Substituenten niederer Elektronenaffinität (X = OMe, H) wird die Methode der Metallierung von Anilinen mit Natriumamid bevorzugt. Vier Kristallstrukturen wurden bestimmt. N-(Tri-t-butoxysilyl)-p-nitroanilin, N-Methyl-(N-tri-t-butoxysilyl)-p-nitroanilin und N-(Tri-t-butoxysilyl)-p-cyanoanilin kristallisieren bei 298 K monoklin, N-(Tri-t-butoxysilyl)anilin kristallisiert orthorhombisch.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19946200230
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  • 9
    Electronic Resource
    Electronic Resource
    Untersuchungen zur Acidität und Basizität von Alkoxysilylaminen (1978)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 447 (1978), S. 199-206 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigations on Acidity and Basicity of AlkoxysilylaminesRelative acidity and basicity have been determined for silylamines of the type (RO)3Si—NH—X (R = Et, n. Pr, i-Pr, s-Bu, t-Bu; X = n-Bu, Ph, p-MeO—C6H4, p-Cl—C6H4, p-NO2—C6H4) by IR, NMR, and potentiometric investigations.The position of the νNH band, the shift of this band in tetrahydrofuran and the chemical shift of NH-proton-NMR signal show a significant increase of NH acidity with increasing electron attracting effect of R and X.The shift of deuteriochloroform νCD band at association with aminosilanes and the results of potentiometric investigations confirm the low basicity of these compounds and the decrease of the basicity with increasing acidity.
    Notes: Für Silylamine des Typs (RO)3Si—NH—X (R = Et, n-Pr, i-Pr, s-Bu, t-Bu; X = n-Bu, Ph, p-MeOC6H4, p-Cl—C6H4, p-NO2—C6H4) wurde die relative Acidität und Basizität bestimmt sus IR-, NMR-und potentiometrischen Untersuchungen.Die Lage der νNH-Bande, die Verschiebung dieser Bande in Tetrahydrofuran und die chemische Verschiebung des NH-Protonen-NMR-Signals zeigen eine deutliche Erhöhung der Acidität mit wachsendem elektronenziehenden Effekt der Substituenten R und X.Die Verschiebung der Deuterochloroform-νC—D-Bande bei Assoziation mit den Silylaminen und die Ergebnisse potentiometrischer Untersuchungen bestätigen die sehr geringe basizität dieser Verbindungen sowie die weitere Abnahme der Basizität bei zunehmender Acidität.
    Additional Material: 19 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19784470122
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  • 10
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Silicium-Schwefel-Verbindungen. XXV. Reaktion der Trialkoxysilanthiole mit aromatischen Aminen und Darstellung von N-(Trialkoxysilyl)arylaminen (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 489 (1982), S. 211-216 
    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. XXV. Reaction of Trialkoxysilanethiols with Aromatic Amines and Preparation of N-(Trialkoxysilyl)arylaminesPyridine and imidazole catalyze the reaction of trialkoxysilanethiols with substituted anilines. This procedure affords a convenient method for the synthesis of N-(trialkoxysilyl)-aryl-amines. Kinetics of the reaction were investigated and rate constants and activation parameters evaluated. Relationships between the structure of amines and their reactivity were discussed. The mechanism of the reaction is discussed.
    Notes: Pyridin und Imidazol katalysieren die Reaktion von Trialkoxysilanthiolen mit substituierten Anilinen. Dadurch wurde eine günstige präparative Methode zur Darstellung von N-(Trialkoxysilyl)arylaminen ausgewertet. Die Kinetik der Reaktion wurde untersucht und die Geschwindigkeitskonstanten und Aktivierungsparameter bestimmt. Der Zusammenhang zwischen der Struktur der Amine und ihrer Reaktivität, ferner der Mechanismus der Reaktion, werden diskutiert.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19824890125
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