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  • 1
    Electronic Resource
    Electronic Resource
    4,4′-Dipyridyl complexes of rare-earth thiocyanates (1984)
    Springer
    Monatshefte für Chemie 115 (1984), S. 961-973 
    Details
    ISSN: 1434-4475
    Keywords: 4,4′-Dipyridyl complexes ; Rare-earth complexes ; Infrared spectra ; Thermal decomposition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurden 4,4′-Dipyridylkomplexe des TypesLn(4-dipy)2(NCS)3·5H2O mitLn = La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, Lu und Y dargestellt. Die IR-Spektren und andere physikalische Eigenschaften werden diskutiert und die thermische Zersetzung von einigen Verbindungen (in der Reihe Gd ÷ Lu) untersucht.
    Notes: Abstract 4,4′-Dipyridyl complexes of rare-earth thiocyanates of the formulaLn(4-dipy)2(NCS)3·5H2O (Ln = La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, Lu, Y, 4-dipy = 4,4′-dipyridyl) have been synthesized. The IR spectra of these compounds and other physical properties are discussed. The thermal decomposition of some compounds (in the order Gd ÷ Lu) has been investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00798764
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  • 2
    Electronic Resource
    Electronic Resource
    Diaquabis(2,4′-bipyridyl-N′)dichloromanganese(II) (2001)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 57 (2001), S. m183-m185 
    Details
    ISSN: 1600-5368
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: The Mn atom in the title compound, [MnCl2(C10H8N2)2(H2O)2], occupies a centre of symmetry. The pyridine rings are planar and all bond distances are normal. Bond-valence calculations show that the Mn—O bond is weaker than both the Mn—N and Mn—Cl bonds. The molecules are held together in the crystal by hydrogen bonds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S1600536801005840
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  • 3
    Electronic Resource
    Electronic Resource
    Complex formation studies on Ho(III) and Lu(III) with 1-(2-pyridylazo)-2-naphthol (PAN) in alcohol-water solutions (1986)
    Springer
    Monatshefte für Chemie 117 (1986), S. 437-441 
    Details
    ISSN: 1434-4475
    Keywords: Complexes ; Holmium (III) ; Lutetium(III) ; 1-(2-Pyridylazo)-2-naphthol ; Stability constants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Bildung der Komplexe vonPAN in den SystemenLn(III)—PAN—Alkohol-Wasser (Ln(III)=Ho, Lu; Alkohol=Ethanol,n-Propanol,iso-Propanol) wurde mit einer spektrophotometrischen Methode untersucht. Die Gleichgewichtskonstanten der ReaktionenLn 3+ + HL⇌LnL 2+ + H+ (HL==PAN) und die Stabilitätskonstanten der KomplexeLnL 2+ wurden berechnet.
    Notes: Abstract The formation ofPAN complexes in the systemsLn(III)—PAN—alcohol-water (where:Ln(III)=Ho, Lu and alcohol=ethanol,n-propanol,iso-propanol) was investigated by a spectrophotometric method. Equilibrium constants for the reactionLn 3+ + HL⇌LnL 2+ + H+ (HL=PAN) and stability constants of complexesLnL 2+ were calculated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00810891
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  • 4
    Electronic Resource
    Electronic Resource
    Complex compounds of 2,2′-bipyridyl with some rare-earth bromides (1986)
    Springer
    Monatshefte für Chemie 117 (1986), S. 783-792 
    Details
    ISSN: 1434-4475
    Keywords: 2,2′-Bipyridyl complexes ; Rare-earth complexes ; Infrared spectra ; 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)2·6H2O (Ln=La, Pr, Nd, Sm, Eu, Gd) undLnBr2OH(2-bipy)2·4H2O (Ln=Pr, Nd, Sm, Eu, Gd) dargestellt. Die IR-Spektren werden diskutiert. Die thermische Zersetzung von VerbindungenLnBr3(2-bipy)2·6H2O wird untersucht.
    Notes: Abstract The preparation of a series of new compoundsLnBr3(2-bipy)2·6H2O (Ln=La, Pr, Nd, Eu, Gd) andLnBr2OH(2-bipy)2·4H2O (Ln=Pr, Nd, Sm, Eu, Gd) is described. The IR spectra of these compounds are discussed. The thermal decomposition of compoundsLnBr3(2-bipy)2·6H2O has been investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00810069
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  • 5
    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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  • 6
    Electronic Resource
    Electronic Resource
    4,4′-Dipyridyl and 2,2′-dipyridyl complexes of rare-earth perchlorates (1982)
    Springer
    Monatshefte für Chemie 113 (1982), S. 827-835 
    Details
    ISSN: 1434-4475
    Keywords: 4,4′-Dipyridyl complexes ; 2,2′-Dipyridyl complexes ; Infrared spectra ; Rare-earth complexes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurden 4,4′-Dipyridylkomplexe des TypsLn(4-dipy)8(ClO4)3HClO4 · · 4 H2O mitLn=La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, Lu, Y und 2,2′-Dipyridylkomplexe des TypsLn(2-dipy)3(ClO4)3 · 6 H2O mitLn=Pr, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, Lu und Y dargestellt. Die IR-Spektren und andere physikalische Eigenschaften werden diskutiert.
    Notes: Abstract 4,4′-Dipyridyl and 2,2′-dipyridyl complexes of rare-earth perchlorates of the formulaLn(4-dipy)8(ClO4)3HClO4 · 4H2O (Ln=La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, Lu, Y, 4-dipy=4,4′-dipyridyl) andLn(2-dipy)3(ClO4)3 · 6H2O (Ln=Pr, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb, Lu, Y, 2-dipy = 2,2′-dipyridyl) have been synthesized. The IR spectra of these compounds and other physical properties are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00809023
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  • 7
    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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  • 8
    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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  • 9
    Electronic Resource
    Electronic Resource
    Complex formation of certain rare earth metals with 1-(2-pyridylazo)-2-naphthol (PAN) in alcohol-water solutions (1988)
    Springer
    Monatshefte für Chemie 119 (1988), S. 677-681 
    Details
    ISSN: 1434-4475
    Keywords: Complexes ; Lanthanides ; 1-(2-Pyridylazo)-2-naphthol ; Stability constants
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Bildung der Komplexe vonPAN in den SystemenLn(III)—PAN—Alkohol—Wasser [Ln(III) = Pr, Nd, Sm, Eu, Gd, Tb, Alkohol = Ethanol undLn(III) = Eu, Alkohol =n-Propanol, Isopropanol] wurde mit einer spektrophotometrischen Methode untersucht. Die Gleichgewichtskonstanten der ReaktionenLn 3++HL⇌LnL 2++H+ (HL =PAN) und die Stabilitätskonstanten der KomplexeLnL 2+ wurden berechnet.
    Notes: Abstract The formation ofPAN complexes in the systems:Ln(III)—PAN—alcohol—water [whereLn(III) = Pr, Nd, Sm, Eu, Gd, Tb, alcohol - ethanol andLn(III) = Eu, alcohol =n-propanol, isopropanol] was investigated by a spectrophotometric method. Equilibrium constants for the reactionLn 3++HL⇌LnL 2++H+ (HL =PAN) and stability constants of complexesLnL 2+ are reported.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00809680
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  • 10
    Electronic Resource
    Electronic Resource
    2,4′-Bipyridyl complexes with cobalt(II) and nickel(II) (1995)
    Springer
    Transition metal chemistry 20 (1995), S. 203-207 
    Details
    ISSN: 1572-901X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Complexes of empirical formulae [ML2Cl2(OH2)2], [CoL2Br2(OH2)2]L·4H2O, [NiL2Br2(OH2)2]L2·2H2O, [ML2(OH2)4]L2(NO3)2 and [ML4(OH2)2](ClO4)2·2H2O (M = CoII, NiII, L = 2,4′-bipyridyl) were synthesized and characterized by elemental and spectral analyses. The thermal decomposition of the complexes was also investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00167031
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