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  • 1
    Electronic Resource
    Electronic Resource
    Solvent extraction of lanthanide ions with 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 (HPMBP) (1988)
    Springer
    Monatshefte für Chemie 119 (1988), S. 389-396 
    Details
    ISSN: 1434-4475
    Keywords: Extraction ; 1-Phenyl-3-methyl-4-benzoyl-pyrazolone-5 ; Rare earth complexes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Extraktion von Er(III), Yb(III) und Lu(III) mittels 1-Phenyl-3-methyl-4-benzoyl-pyrazolon-5 (HPMBP oder HL) in Kohlenstofftetrachlorid aus wäßriger Phase in Abhängigkeit vompH der wäßrigen Phase sowie von der Konzentration von HPMBP in der organischen Phase wurde untersucht. Die folgende Gleichung beschreibt die Extraktionsreaktion: $$Ln^{3 + } + 3HL_{(0)} \rightleftharpoons LnL_{3(0)} + 3H^ + \left( {Ln^{3 + } = Er,Yb, Lu} \right)$$ Die Werte der Extraktions-Gleichgewichtskonstanten (K ex ) sowie der zweiphasigen Beständigkeitskonstanten (β 3 x ) für die KomplexeLnL 3 wurden berechnet.
    Notes: Abstract The solvent extraction of Er(III), Yb(III) and Lu(III) by 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 (HPMBP or HL) in carbon tetrachloride has been studied as a function of thepH of the aqueous phase and the concentration of the extractant in the organic phase. The equation for the extraction reaction has been suggested as: $$Ln^{3 + } + 3HL_{(0)} \rightleftharpoons LnL_{3(0)} + 3H^ + \left( {Ln^{3 + } = Er,Yb, Lu} \right)$$ The extraction equilibrium constants (K ex ) and two-phase stability constants (β 3 x ) for theLnL 3 complexes have been evaluated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00810419
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  • 2
    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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    Paper (German National Licenses)
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  • 3
    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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