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  • Analytical Chemistry and Spectroscopy  (3)
  • Wiley-Blackwell  (3)
  • American Chemical Society
  • Oxford University Press
  • 1995-1999  (1)
  • 1975-1979  (2)
Collection
Keywords
Publisher
  • Wiley-Blackwell  (3)
  • American Chemical Society
  • Oxford University Press
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Kinetics of decomposition of UV-absorbing intermediate generated during electrochemical oxidation of 6-mercaptopurine at stationary pyrolytic graphite electrode (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Biospectroscopy 1 (1995), S. 83-90 
    Details
    ISSN: 1075-4261
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Physics
    Notes: Spectroscopic technique coupled with electrochemical oxidation has been used to study the redox-mechanism of 6-mercaptopurine. Electrochemical oxidation of 6-mercaptopurine has been studied in the pH range 2.0-10.0 by linear and cyclic sweep voltammetry, coulometry and constant potential electrolysis. Spectroscopic technique has been used to monitor the clevage of the S—S bond in the UV-absorbing intermediate generated during electrooxidation. The decay has been observed in a pseudo first order reaction. The ultimate products of oxidation in controlled potential electrolysis have been found as 6-mercaptopurine and purine-6-sulfinic acid. Tentative mechanisms for the formation of the products have also been suggested. It is concluded that spectroscopic studies coupled with electrochemical studies provide a uniquely invaluable insight into the redox mechanism of biologically significant molecules. © 1995 John Wiley & Sons, Inc.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bspy.350010110
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  • 2
    Electronic Resource
    Electronic Resource
    Resonance Raman spectra of Cu-porphin-d4(meso) and Ni-porphin, and the infrared spectrum of Cu-porphin-d4N.R.C.C. Contribution No. 14853. (1976)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 4 (1976), S. 295-303 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The resonance Raman spectra are presented for Ni-porphin and Cu-porphin-d4(meso) as dilute solutions in CS2 and C2Cl4 using an Ar+ laser and a tunable Rhodamine 6G dye laser. The Raman features are assigned to the different vibrational species on the basis of their depolarization data. The assignment of 14 features in the spectrum of Cu-porphin-d4 and 13 features in the spectrum of Cu-porphin and Ni-porphin is discussed by comparing the spectra of the three molecules. Also the infrared spectrum of Cu-porphin-d4 as a solid dispersed in CsI matrix is reported for the 200-2000 cm-1 region.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250040311
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  • 3
    Electronic Resource
    Electronic Resource
    Force constants and bond polarizability derivatives of some XY4 square-planar type ions (1977)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 6 (1977), S. 163-164 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The general valence force field has been employed to evaluate force constants for some square-planar type anions e.g. XY4n- (X = Pd, Pt or Au; Y = Cl or Br; n = 1 or 2) and ICl4-. Bond polarizability derivatives, from Lippincott and Nagarajan, and Long and Plane, have been evaluated and compared with the experimental results. Theoretically determined bond orders have also been compared with experimentally estimated values.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250060402
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