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  • 1
    ISSN: 0935-6304
    Keywords: Capillary gas chromatography ; Major metabolites ; Minor metabolites ; Human urine ; Aromatic solvents ; Biological monitoring ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aromatic solvents are involved in manifold areas of industry and craft. Inhaled solvent vapors are a known health hazard to workers. For medical prevention and toxicological assay specific laboratory methods for urinary metabolites are necessary. An economical capillary gas chromatographic procedure is described which is suitable for routine analysis of major metabolites, sensitive for the determination of minor metabolites, and effective for the separation of chiral metabolic intermediates.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0044-2313
    Keywords: Dichlorine(trifluoromethyl)amine ; dichlorine-fluorine(trifluoromethyl)ammonium hexafluoroarsenate,-antimonate ; Chlorine(difluoromethylene)fluorineammonium hexafluoroantimonate ; preparation ; gas phase structure of CF3NCl2 ; i.r. spectra ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Gas Phase Structure of CF3NCl2 and Preparation of CF3NCl2F+MF6- (M = As, Sb) and CF2 = NCl2F+SbF6-The gas phase structure of CF3NCl2 is reported. The following skeletal parameters are derived (ra-values, error limits are 3σ values): N—C = 1.470(6) Å, N—Cl = 1.733(3) Å, ClNCl = 111.5(4)° and ClNC = 107.6(5)°. CF3NCl2F+MF6- is prepared by fluorination of CF3NCl2 with XeF+MF6-. The same educt CF3NCl2 reacts with XeF+SbF6- at -40°C to CF2 = NClF+SbF6- under elimination of ClF.
    Notes: Es wird über die Gasphasenstruktur von CF3NCl2 berichtet. Der N—C-Bindungsabstand (ra-Wert, Fehlergrenze 3σ-Wert) beträgt 1,470(6) Å, der N—Cl-Abstand 1,733(3) Å und die Bindungswinkel am Stickstoff ClNCl = 111,5(4)° und ClNC = 107,6(5)°.Durch Fluorierung des Amins mit XeF+MF6- (M = As, Sb) können die bis -50°C stabilen Fluorammoniumsalze CF3NCl2F+MF6- synthetisiert werden. Mit dem gleichen Edukt CF3NCl2 reagiert XeF+SbF6- bei -40°C unter ClF-Abspaltung zu CF2 = NClF+SbF6-.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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