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  • Artikel: DFG Deutsche Nationallizenzen  (3)
  • 2015-2019
  • 2010-2014
  • 1985-1989  (3)
  • 1975-1979
  • 1955-1959
  • 1945-1949
  • 1880-1889
  • Nitric oxide  (2)
  • 13C-and15N-Data  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Monatshefte für Chemie 119 (1988), S. 993-1010 
    ISSN: 1434-4475
    Schlagwort(e): Dicyanomethylene-pyrazolinones ; Chromophoric properties ; 13C-and15N-Data ; INDO/S-CI Calculations
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie
    Notizen: Abstract 1-Phenyl-2-pyrazolin-5-ones1 a–e react with tetracyanoethylene forming the corresponding dicyanomethylenepyrazolin-5-ones2 a–e. The products are deeply coloured with absorption bands between 550 and 650 nm, but low ε-values and negative solvatochromic effect. By amine-HCN exchange reaction with anilines the red-coloured phenylamino-cyanomethylene-pyrazolinones3–6 are obtained.15N- and13C-NMR-data of2 and quantum-chemical calculations (INDO/S-CI) reveal the extreme polarization and chromophoric properties of the described dicyanomethylene-pyrazolinones.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1573-0662
    Schlagwort(e): Nitric oxide ; intercomparison ; chemiluminescence ; infrared ; ultraviolet ; photochemical predictions ; GLOBUS
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Geologie und Paläontologie
    Notizen: Abstract Column measurements of nitric oxide were made using several techniques during the MAP/GLOBUS campaign in France in September 1985. The data sets are nearly co-located and simultaneous, therefore allowing a valid intercomparison of the various measurement methods. The range of altitudes sampled differs from instrument to instrument. This complicates the comparison because the data sets are to some extent complementary. The NO distributions apparently vary significantly from day to day, and possibly over shorter timescales. Changes in dynamics may be responsible for these variations. The results from the instruments which measure in the infrared and the ultraviolet are self-consistent, and show good agreement with photochemical predictions. On 19 September, when the intercomparison was made, the profile measured by the in-situ chemiluminescent instrument differed significantly from the predicted profile, and the measured columns were generally higher.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Journal of atmospheric chemistry 8 (1989), S. 229-240 
    ISSN: 1573-0662
    Schlagwort(e): Nitric oxide ; stratosphere ; troposphere ; Globus diurnal variation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Chemie und Pharmazie , Geologie und Paläontologie
    Notizen: Abstract Nitric oxide profiles obtained from three flights of chemiluminescent instruments during the Globus '85 campaign held in France in the autumn of 1985 are reported. When the profile obtained in the early morning of 20 September is compared with the flight made the previous afternoon, an average morning to midday NO ratio of 0.7 for the region between 26 and 33 km is obtained. This value is in good agreement with theoretical studies involving the photolysis of N2O5 and the establishment of the NO2−NO equilibrium.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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