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  • Physical Chemistry  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Rate constants for the bimolecular self-reactions of ethyl, isopropyl, and tert-butyl radicals in solution. A direct comparison (1974)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 6 (1974), S. 453-456 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A competitive method involving the direct measurement of radical concentrations by EPR spectroscopy has been used to show that in solution at 25°C the rate constants for the bimolecular self-reactions of ethyl, isopropyl, tert-butyl, cyclopentyl, and trichloromethyl are all approximately equal, as had been indicated previously by direct measurement of the rate constants for decay of these radicals.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550060315
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Rate constants for the reactions of alkyl radicals with 1,4-cyclohexadieneIssued as NRCC publication no. 24932 (1985)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 17 (1985), S. 1215-1219 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: An electron paramagnetic resonance (EPR) technique was used to show that simple alkyl radicals readily abstract hydrogen from 1,4-cyclohexadiene. Rate constants for the reaction were ca. 104-105 M-1 s-1 at 300 K and activation energies 5-7 kcal mol-1. For the stabilized radicals, allyl and benzyl, the rate constants were 〈102 M-1 s-1 at 300 K. The data suggest that 1,4-cyclohexadiene could be used as an effective trap to probe rearrangement reactions of carbon centered radicals and biradicals.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550171107
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Heat of formation of Benzophenone Oxide (1989)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 21 (1989), S. 157-163 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The heat of formation of benzophenone oxide, Ph2CO2, was measured using photoacoustic calorimetry. The enthalpy of the reaction Ph2CN2 + O2 → Ph2CO2 + N2 was found to be -48.0 ±0.8 kcal mol-1 and ΔHf(Ph2CN2) was determined by measuring the reaction enthalpy for Ph2CN2 + EtOH → Ph2CHOEt + N2 (-53.6 ±1.0 kcal mol-1). Taking ΔHf(PhCHOEt) = -10.6 kcal mol-1 led to ΔHf(Ph2CN2) = 99.2 ± 1.5 kcal mol-1 and hence to ΔHf(Ph2CO2) = 51.1 ± 2.0 kcal mol-1. The results imply that the self-reaction of benzophenone oxide i.e., 2Ph2CO2 → 2Ph2CO + O2 is exothermic by -76.0 ±4.0 kcal mol-1.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550210302
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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