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  • 1
    Electronic Resource
    Electronic Resource
    Nature of the polarographic prewaves of Ni(II) in the presence of thiocyanate
    Amsterdam : Elsevier
    Electrochimica Acta 36 (1991), S. 2119-2121 
    Details
    ISSN: 0013-4686
    Keywords: catalytic ; nickel(II) ; polarographic ; prewaves ; thiocyanate.
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0013-4686(91)85219-W
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Nature of the Ni(II) prewaves at the dropping mercury electrode in the presence of thiourea
    Amsterdam : Elsevier
    Electrochimica Acta 36 (1991), S. 297-298 
    Details
    ISSN: 0013-4686
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0013-4686(91)85252-3
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Kinetics of cerium(IV) oxidation of propionic acid in perchloric acid: Role of solvent (1992)
    Springer
    Reaction kinetics and catalysis letters 48 (1992), S. 153-162 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Скорость окисления пропионовой кислоты (ПК) церием(IV) в водной надхлорной кислоте (1,0–6,0 моль/дм3) пропорциональна концентрации ПК и общий порядок реакции равен двум. Скорость реакции зависит от величин кислых функций Гаммета (H0) в соответствии с гипотезой Цукера-Гаммета, а также критерием Баннета-Олсена. Вода играет роль протонопроводника. Предлагается вероятный механизм.
    Notes: Abstract The oxidation rate of propionic acid (PROA) by cerium(IV) in aqueous perchloric acid (1.0–6.0 mol/dm3) is proportional to the PROA concentration, the total order of the reaction being two. It was found that the rate is related to the values of Hammett's acidity function (H0) in agreement with both Zucker-Hammett's hypothesis and Bunnett-Olsen's criterion, the water acting as a proton transfer agent. A mechanism consistent with the findings is proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02070080
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  • 4
    Electronic Resource
    Electronic Resource
    Role of solvent acidity in the cerium(IV) oxidation of butanoic acid (1992)
    Springer
    Reaction kinetics and catalysis letters 46 (1992), S. 167-172 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Кинетику окисления масляной кислоты церием (IV) исследовали в водном растворе хлорной кислоты с концентрациями 1,0–6,0 моль/дм3. Найдено, что порядок реакции равен 1 как по окислителю, так, и по восстановителю. Анализируя влияние кислотности растворителя, было установлено, что вода ведет себя как агент передачи протона. Предложен вероятный механизм реакции.
    Notes: Abstract The oxidation of butanoic acid by cerium(IV) has been studied kinetically in aqueous perchloric acid (1.0–6.0 mol/dm3). It has been found that the reaction is first order with respect to both oxidant and the reductant. Analysis of the influence of the solvent acidity permits to clarify the role of water which acts as a proton transfer agent. A reaction mechanism is proposed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02096693
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  • 5
    Electronic Resource
    Electronic Resource
    UV-VIS spectrophotometric study and dynamic analysis of the colloidal product of permanganate oxidation of α-amino acids (1993)
    Springer
    Reaction kinetics and catalysis letters 51 (1993), S. 51-59 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Both spectrosphotometric and kinetic evidence is offered concerning the main features of the production of colloidal Mn(IV) originating from the permanganate oxidation of glycine, alanine and phenylalanine. The analysis of the time of colloid formation supports the notion that glycine and phenylalanine participate in the colloid structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02062477
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  • 6
    Electronic Resource
    Electronic Resource
    Permanganate oxidation of glycine: Influence of amino acid on colloidal manganese dioxide (1992)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 24 (1992), S. 411-419 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Permanganate ion oxidizes glycine in phosphate buffered solutions, and the product obtained was identified as a soluble form of colloidal manganese dioxide. The influence of glycine on the colloidal product shows glycine concentration changes extinction coefficients of the colloidal product, and only when the influence of glycine has been eliminated, the theoretical and experimental reaction rates coincide. The dependence of the rate of flocculation on several experimental variables was also considered.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550240502
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  • 7
    Electronic Resource
    Electronic Resource
    Kinetic study of the oxidation of L-phenylalanine by potassium permanganate in acid medium (1995)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 27 (1995), S. 507-515 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The kinetics of permanganate oxidation of L-phenylalanine in acid medium at a constant ionic strength has been investigated spectrophotometrically. An autocatalytic reaction was observed being autocatalyzed by a soluble form of Mn(IV).The reaction appears to involve a parallel consecutive reaction process in which Mn(IV) is formed as an intermediate and Mn(II) as a reaction product. A tentative mechanism consistent with the kinetics is discussed. © 1995 John Wiley & Sons, Inc.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550270509
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  • 8
    Electronic Resource
    Electronic Resource
    Kinetics and mechanisms of the oxidation by permanganate of L-Phenylalanine (1991)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 23 (1991), S. 593-605 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The oxidation of L-Phenylalanine by permanganate ion in aqueous phosphate buffers is autocatalized by the inorganic reaction product, which is stabilized in solution by adsorption of phosphate ions on its surface. This product is a soluble form of colloidal manganese dioxide. The rate of the noncatalytic reaction pathway is first-order in both the oxidizing and reducing agent. It is not affected by potassium chloride addition to the solution, but by phosphate addition. The rate increases with the pH of the medium. The autocatalytic pathway is first-order in both permanganate ion and colloidal manganese dioxide, (the permanganate ion according to the Langmuir isotherm). The autocatalytic rate increases with reductant concentration (follows the Langmuir adsorption isotherm). It is not affected by potassium chloride addition to the solution, whereas an increase in the phosphate concentration results in an increase in the rate with the same pH of the medium. Mechanisms consistent with the experimental data are proposed.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550230705
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