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  • 2005-2009
  • 2000-2004
  • 1990-1994  (1)
  • 1980-1984  (1)
  • 1945-1949
  • 2-Hydroxyalkanoic acids  (1)
  • 33.10.−n  (1)
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  • 2005-2009
  • 2000-2004
  • 1990-1994  (1)
  • 1980-1984  (1)
  • 1945-1949
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  • 1
    Electronic Resource
    Electronic Resource
    Derivatization of 2-hydroxyalkanoic acids for gas chromatographic enantiomer separation (1984)
    Springer
    Chromatographia 18 (1984), S. 387-388 
    Details
    ISSN: 1612-1112
    Keywords: Capillary GC ; 2-Hydroxyalkanoic acids ; Trimethylsilylethers ; Enantiomeric resolution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary 2-Trimethylsiloxycarboxamides are suitable derivatives for direct gas chromatographic resolution of 2-hydroxy-alkanoic acid enantiomers. A fast derivatization procedure is presented which involves preparation of the corresponding acyl chloride by reaction with thionyl chloride, aminolysis to the carboxamide and conversion of the hydroxyl group to the trimethylsilylether. The derivatization entails very little racemization, even with mandelic acid which is very sensitive in this respect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02262486
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Structural and electronic properties of large fullerenes (1993)
    Springer
    The European physical journal 26 (1993), S. 264-266 
    Details
    ISSN: 1434-6079
    Keywords: 36.40.+d ; 33.10.−n ; 34.20.cf
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present the results of a first-principles calculation for the geometrical and electronic structure of C78 and C84 fullerene isomers. Our study confirms that for C84 two isomers withD 2 andD 2d symmetries are the most energetically favorable, and for C78 aC 2v isomer is the ground-state configuration. Results from the present calculation are compared with recent experimental observations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01425685
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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