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  • Electronic Resource  (2)
  • 1990-1994  (2)
  • ESR  (1)
  • Laser evaporation  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Laser evaporation of some solid organosilicon polymers (1991)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 5 (1991), S. 57-64 
    Details
    ISSN: 0268-2605
    Keywords: Laser evaporation ; deposition ; polysilane ; poly(sila-alkene) ; Chemistry ; Industrial Chemistry and Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Continuous wave (cw) CO2 laser irradiation of some organosilicon polymers composed of -Me2Si-, -Me2SiMe2SiCH2-, RMeSi- and RMeSiMe2SiCH2CH2- units (where R = methyl, adamantyl, phenyl and hydrogen) leads to the evaporation of the polymer and is dominated by the formation of a solid deposit that has a continuous structure. It is assumed that chemical changes occur prior to the transfer of ejected material to the gas phase and that these consist mainly of the formation of high molecular biradicals or 1,2-disilacyclobutane monomer that both re-polymerize spontaneously upon their deposition onto a nearby cold surface. The mechanism of these specific decompositions of the polymers is assessed on the basis of the IR spectra of the deposits and, for the minor gaseous products, identification by GC MS techniques.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590050108
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    ESR study of the reaction of trithiazyl trichloride with primary aromatic amines (1990)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 28 (1990), S. 797-806 
    Details
    ISSN: 0749-1581
    Keywords: ESR ; NSN.2-centred radicals ; Trithiazyl trichloride ; 2,1,3-Benzothiadiazole ; Benzenamines ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Benzenamines (1) react with 1,3,5-trichloro-1λ4,3λ4,5λ4-1,3,5,2,4,6-trithiatriazine (2) to form the novel radicals 2-(2λ4-2,4,-dithia-1,3-diaza-2-chloro-1,3-butadien-1-yl)-2λ4-2,1,3-benzothiadiazol-1-yls (4) or 2-(5-chlora-2λ4-2,4-dithia-1,3-diaza-1,2-pentadien-1-yl)-2λ4-2,1,3-benzothiadiazol-1-yls (4′). ESR hyperfine splitting constants of 20 different radicals of type 4 are presented, and the mechanism of their formation and the suggested structure of 4 are discussed.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1260280912
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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