Library

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
  • 1
    Electronic Resource
    Electronic Resource
    Laser-desorption Fourier-transform mass spectrometry of [Ta6X12]X2·8H2O, X=C1, BrContribution from the 2nd European FTMS Workshop, Antwerp, Belgium, September 1993. (1994)
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 8 (1994), S. 56-58 
    Details
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The gas phase of hexanuclear Ta clusters of type [Ta6X12]X2·8H2O, X=Cl, Br was investigated using laser-desorption Fourier-transform mass spectrometry. The [Ta6X12]X2- ions (m/z=1581 for X=Cl, m/z=2205 for X=Br) are the most characteristic peaks in their negative-ion laser-desorption mass spectra. Additional fragmentations observed are the result of loss of halogen and metal from [Ta6X12]X2-. Positive ions are observed only in the laser-desorption mass spectra of [Ta6Br12]Br·8H2O.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/rcm.1290080111
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Long-range electronic interactions in androstanediones (1997)
    New York, NY : Wiley-Blackwell
    International Journal of Quantum Chemistry 63 (1997), S. 797-803 
    Details
    ISSN: 0020-7608
    Keywords: long-range electronic effects ; MNDO SCF calculations ; 13C-NMR ; androstanediones ; Chemistry ; Theoretical, Physical and Computational Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The results of MNDO SCF MO calculations on 5α-androstane (1), androstan-3-one (2), androstan-16-one (3), androstan-17-one (4), androstane-3,16-dione (5), and androstane-3,17-dione (6) and the experimental 13C-NMR chemical shifts observed in various solvents (C6D12, CDCl3, CD3CO2D, CD2Cl2, CD3COCD3, CD3OD, CD3CN) were used to assess the nature of long-range interactions between 3,16- and 3,17-carbonyl groups in androstanediones. The 13C-NMR results appear to confirm the proposition that the interactions in androstane-3,16-dione are stronger. © 1997 John Wiley & Sons, Inc. Int J Quant Chem 63: 797-803, 1997
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
  • 3
    Electronic Resource
    Electronic Resource
    Über die Photochemie des Bis-[4-methyl-naphthalin-(2)]-indigos, II. Die Quantenausbeuten der Lichtumlagerung (1961)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 94 (1961), S. 2382-2389 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Quantenausbeuten der photochemischen Umlagerung von Bis-[4-methyl-naphthalin-(2)]-indigo (NI) in die Ketoform (I) des 7-Hydroxy-5.12-dimethyl-dinaphtho[1.2-b:2′.3′-d]furans (II) sind in hydroxylfreien Lösungsmitteln von der Lichtintensität, der Konzentration des NI und vom Lösungsmittel unabhängig. Dies Stützt die Annahme einer intramolekularen Lichtumlagerung.  -  In hydroxylhaltigen Lösungsmitteln wird durch eine Dunkelreaktion von II mit NI eine Erhöhung der Quantenausbeute im Laufe der Bestrahlung vorgetäuscht; das Produkt ist noch ungeklärt.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19610940904
    Library Location Call Number Volume/Issue/Year 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...