ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
Collection
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Analytically significant steric effects on ^2^9Si NMR chemical shifts as observed in trimethylsilylated steroids
    Amsterdam : Elsevier
    Journal of Organometallic Chemistry 341 (1988), S. C6-C8 
    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(88)89112-5
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Bildung siliciumorganischer Verbindungen. XXVIIIZ. anorg. allg. Chem. 360, 317 (1968).. Struktur eines Tetrasilabicyclo[3.3.0]oct-1(5)en (1969)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 365 (1969), S. 113-118 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Compound (II) (compare Inhaltsübersicht) which is formed by methylation of (I) crystallizes in the triclinic system space group P1-Ci1 with Z = 1 and a = 9.58, b = 9.44, c = 7.61 Å (all of them ± 0.03 Å), α = 110.8°, β = 96.6°, γ = 119.1° (all of them ± 0.2°). The C—C double bond distance is 1.39 Å, the mean Si—C distance 1.883 Å. The bond angles and distances are in agreement with the stereochemistry of the molecule.
    Notes: Das durch Methylierung des 2,2,4,4,6,6,8,8-octachlor-2,4,6,8-tetrasilabicyclo[3,3,0]oct-1(5) (I) gebildete 2,2,4,4,6,6,8,8-octamethyl-2,4,6,8-tetrasilabicyclo[3,3,0]oct-1(5)en (II) kristallisiert triklin in der Raumgruppe P1-Ci1 mit Z = 1 und a = 9,58; b = 9,44; c = 7,61 Å (alle ± 0,03 Å), α = 110,8° β = 96,6°; γ = 119,1° (alle ± 0,2°). Der C—C-Doppelbindungs-abstand beträgt 1,39 Å der Si—C-Abstand im Mittel 1,883 Å. Die Bindungswinkel und Abstände stehen in Übereinstimmung zur Stereochemie der Molekel.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19693650302
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Bildung siliciumorganischer Verbindungen, 47. Die Kristall- und MolekülStruktur von 1,3,5,7- Tetramethyl-tetrasila-adamantan (1972)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 393 (1972), S. 74-80 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Formation of organosilicon compounds. 47. The crystal land molecular structure of 1,3,5,7-tetramethyl-tetrasila-adamantan1,3,5,7- Tetramethyl-tetrasila-adamantan, Si4C10H24, is a pyrolysis product of Si(CH3)4. It crystallizes in the monoclinic space group P21/c with a = 8.859 Å, b = 9.844 Å, c = 18.316 Å, β = 91.04°, Z = 4. The molecule exhibits Td-symmetry within the experimental error. The mean bond lengths Si—C are 1.889 Å and 1.866 Å for the Si—CH3 and Si—CH2 bonds respectively.
    Notes: Das bei der Pyrolyse von Si(CH3)4 gebildete 1,3,5,7- Tetramethyltetrasila-adamantan Si4C10H24 Kristallisiert monoklin in der Raumgruppe P21/c mit a = 8,859 Å, b = 9,844 Å, c = 18,316 Å, β = 91,04°, Z = 4. Das Molekül besitzt innerhalb der Fehlergrenzen Td-Symmetrie. Die mittleren Bindungslängen Si—C betragen 1,889 Å bzw. 1,866 Å für Bindungen Si—CH3 bzw. Si—CH2.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19723930109
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Bildung siliciumorganischer Verbindungen. LXI. Die Kristall- und MolekülStruktur des 1,1,3,3,5,5,7,7-Octamethyl-1,3,5,7-tetrasila-cyclooctans Si4C12H32 (1976)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 419 (1976), S. 27-31 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Formation of Organosilicon Compounds. LXI. Crystal and Molecular Structure of 1.1.3.3.5.5.7.7-Octamethyl-1.3.5.7-tetrasila-cyclooctane Si4C12H32Octamethyl-tetrasila-cyclooctan Si4C12H32 crystallizes in the monoclinic space group C2 with a = 17.807, b = 6.121, c = 10.856 Å, β = 126.09° und 2 molecules in the unit cell. The molecule has a C2-conformation which deviates slightly from C2v symmetry. The mean Si—C bond length is 1.879 ± 0.011 Å. The mean Si—CH2 bond length is greater than the Si—CH3 bond length (1.897(15) Å and 1.861(10) Å respectively).
    Notes: Octamethyl-tetrasila-cyclooctan Si4C12H32 kristallisiert monoklin in der Raumgruppe C2 mit a = 17,807, b = 6,121, c = 10,856 Å, β = 126,09° und Z = 2. Die Molekel liegt in einer C2-Konformation vor, die von der Symmetrie C2v nur wenig abweicht. Die mitteleren Si-C-Bindungsabstände betragen 1,879 ± 0,011 Å. Die mitteleren Si-CH2 Abstände sind mit 1,897 (15) Å größer als die Si-CH3-Abstände (1,861(10) Å). Die Bindungswinkel im Ringsystem zeigen signifikante Abweichungen von Tetraederwinkeln.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19764190106
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...