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  • 1
    Electronic Resource
    Electronic Resource
    The extraction of Yb(III) and Lu(III) with chloroform from aqueous solutions in the presence of cupferron (1988)
    Springer
    Monatshefte für Chemie 119 (1988), S. 903-912 
    Details
    ISSN: 1434-4475
    Keywords: Cupferron ; Extraction ; Rare earth complexes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Das Gleichgewicht der Verteilung von Yb(III) und Lu(III) zwischen Chloroform und Wasser in Anwesenheit von Cupferron (Ammoniumsalz des N-Nitrosophenylhydroxylamins) als Funktion despH-Wertes der Wasserphase und der Konzentration des N-Nitrosophenylhydroxylamins (HL) wurde untersucht. Die Beständigkeits-Konstanten der in der Wasserphase entstehenden KomplexeLnL n(3−n) (n=1÷3), die Gleichgewichtskonstante der Extraktions-Reaktion: $$Ln(H_2 O)_m^{3 + } + 3HL_{(O)} \mathop \rightleftharpoons \limits^{K_{ex} } LnL_{3(O)} + 3H^ + + mH_2 O(Ln^{3 + } = Yb,Lu),$$ die zweiphasigen Beständigkeits-Konstanten der KomplexeLnL 3,pH 0.5 und der Trennungskoeffizient des Lu(III) von Yb(III) wurden bestimmt.
    Notes: Abstract The equilibrium of distribution of Yb(III) and Lu(III) between chloroform and the aqueous phase in the presence of cupferron (the ammonium salt of N-nitrosophenylhydroxylamine) were studied as apH function of the aqueous phase and the concentration of N-nitrosophenylhydroxylamine (HL). The stability constants for theLnL n 3–n ) complexes (n=1÷3) being formed in the aqueous phase were established, as well as the equilibrium constants of the extraction reaction $$Ln(H_2 O)_m^{3 + } + 3HL_{(O)} \mathop \rightleftharpoons \limits^{K_{ex} } LnL_{3(O)} + 3H^ + + mH_2 O(Ln^{3 + } = Yb,Lu),$$ two-phase stability constants for theLnL 3 complexes,pH 0.5 and the separation factor Lu(III) from Yb(III).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00810099
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  • 2
    Electronic Resource
    Electronic Resource
    2,2′-Bipyridyl complexes with heavy rare-earth bromides and YBr3 (1987)
    Springer
    Monatshefte für Chemie 118 (1987), S. 1243-1256 
    Details
    ISSN: 1434-4475
    Keywords: 2,2′-Bipyridyl complexes ; 4,4′-Bipyridyl complexes ; Infrared spectra ; Rare-earth complexes ; Thermal decomposition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurden 2,2′-Bipyridylkomplexe des TypsLnBr3(2-bipy)2 · 6 H2O,LnBr2OH(2-bipy) · 4 H2O (Ln = Tb, Dy, Ho, Er, Yb, Lu), YBr3(2-bipy)2 · 6 H2O und YBr3(4-bipy)2 · 6 H2O(2-bipy = 2,2′-Bipyridyl,4-bipy = 4,4′-Bipyridyl) dargestellt. Die IR-Spektren (4 000–400 cm−1) und die thermischen Eigenschaften dieser Verbindungen wurden untersucht.
    Notes: Abstract Compounds of the formulaLnBr3(2-bipy)2 · 6 H2O,LnBr2OH(2-bipy)2 · 4 H2O (Ln = Tb, Dy, Ho, Er, Yb, Lu), YBr3(2-bipy)2 · 6 H2O and YBr3(4-bipy)2 · 6 H2O (2-bipy = 2,2′-bipyridyl;4-bipy = 4,4′-bipyridyl) were prepared and their infrared spectra investigated between 4 000–400 cm−1. They have been characterized by their thermal properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00816867
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    Paper (German National Licenses)
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