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  • complexes  (2)
  • UV spectroscopy  (1)
  • 1980-1984  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Ultraviolet spectroscopic study of ferric equilibria at high chloride concentrations (1981)
    Springer
    Journal of solution chemistry 10 (1981), S. 51-67 
    Details
    ISSN: 1572-8927
    Keywords: Hydrolysis ; ferric chloride ; ferric hydroxide ; UV spectroscopy ; complexes ; ion pairs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The equilibria among the species Fe3+, FeCl2+, FeCl2 +, FeOH2+ and Fe(OH)2 + have been examined by ultraviolet absorption spectroscopy. Our results indicate that previous workers have generally overestimated the stability constant of FeCl2+ and that the association of Fe3+ and Cl− is predominantly inner sphere. The formation constant of FeOH2+ obtained in 0.68 m NaCl is in good agreement with our earlier results obtained in 0.68 m NaClO4. Our results indicate that formation of FeOHCl+ is much less significant than has been previously reported. Molar absorptivities for the species Fe3+, FeCl2+, FeCl2 + and FeOH2+ are reported for wavelengths between 220 and 400 nanometers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00652780
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  • 2
    Electronic Resource
    Electronic Resource
    Stability constants of iron(III) borate complexes (1980)
    Springer
    Journal of solution chemistry 9 (1980), S. 885-894 
    Details
    ISSN: 1572-8927
    Keywords: Ferric iron ; ferric borate ; stability constant ; ultraviolet spectroscopy ; complexes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The ultraviolet absorbance data from experiments conducted at constant pH and total iron concentration but variable B(OH)3 concentration were used to determined the stability constants of FeB(OH) 4 2+ and Fe[B(OH)4 2 + at 25°C and an ionic strength of 0.68. The estimates obtained were *β1 = 1.0 ± 0.2 × 10−2 and *β2 = 2 ± 1 × 10−5, respectively (uncertainties are two times the standard error of the estimates). A calculation of the extent of iron(III) borate formation in ocean water at pH 8.2 shows that iron(III) borates are not a significantly large component of iron(III) speciation in seawater.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00668001
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    Paper (German National Licenses)
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