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  • 1
    Electronic Resource
    Electronic Resource
    Synthesis and structural studies of complexes of Sb(III) and Bi(III) with thiosemicarbazones (1992)
    Springer
    Monatshefte für Chemie 123 (1992), S. 315-319 
    Details
    ISSN: 1434-4475
    Keywords: Thiosemicarbazones ; Heterocyclic aldehydes ; Metal complexes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurden einige neue Komplexe von Sb(III) und Bi(III) mit Tiosemicarbazonen von Furfural, Thiophen-2-carbaldehyd, Indol-3-carbaldehyd und Pyridin-2-carbaldehyd hergestellt und mittels Elementaranalyse, Leitfähigkeitsmessungen, Molekulargewichtsbestimmungen und IR-,1H- bzw.13C-NMR-Spektroskopie charakterisiert. Die Komplexe sind vom TypMX 3 L[M=Sb(III) oder Bi(III);X=Chlorid;L=Ligand] und sind inDMF Nichtelektrolyten. Die spektroskopischen Daten zeigen, daß die Thiosemicarbazone als zweizähnige Liganden über den Azomethin-Stickstoff und Schwefel wirken.
    Notes: Summary Several new complexes of Sb(III) and Bi(III) with thiosemicarbazones of furfuraldehyde, thiophene-2-carbaldehyde, indol-3-carbaldehyde and pyridine-2-carbaldehyde have been prepared and characterized by elemental analysis, conductivity, molecular weight determination and IR,1H-and13C-NMR spectral studies. The ligands form complexes of the typeMX 3 L[M=Sb(III) or Bi(III);X=chloride;L=ligand] which are found to be non-electrolytes inDMF. Spectral data indicate that the thiosemicarbazones act as bidentate ligands through the azomethine nitrogen and sulphur.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00810942
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  • 2
    Electronic Resource
    Electronic Resource
    Schiff base complexes of dioxouranium(VI), III. Commun.: Dioxouranium(VI) complexes of bibasic tetradentateSchiff bases (1976)
    Springer
    Monatshefte für Chemie 107 (1976), S. 95-103 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Bibasic tetradentateSchiff bases having the donor system OH−NX−NX−OH have been shown to form UO2(NO3)2(SBH2) type of derivatives [SBH2 is the molecule of the bibasic tetradentateSchiff bases such as HOC6H4C(R)∶ ∶N(CH2) n N∶C(R)C6H4OH (where R=H or CH3 andn=2 or 3) and HOC(R′)∶CHC(CH3)∶N(CH2) n N∶C(CH3)CH∶ ∶C(R′)OH (where R′=CH3 or C6H5 andn=2 or 3)]. The 1∶1 stoichiometry of these complexes is shown by elemental analysis and conductometric titrations. The molar conductence values in nitrobenzene indicate the non-electrolytic behaviour and the magnetic susceptibility measurements by the Gouy method show these complexes to be diamagnetic.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00909086
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  • 3
    Electronic Resource
    Electronic Resource
    Schiff base derivatives of lanthanons, La(III), Pr(III), Nd(III) and Sm(III) complexes of bifunctional tetradentateSchiff base (1976)
    Springer
    Monatshefte für Chemie 107 (1976), S. 777-781 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Reactions of La(III), Pr(III), Nd(III) or Sm(III) nitrate with bifunctional tetradentateSchiff base, [o-HOC6H4C(CH3): :NCH2]2, having the donor system HO−N−N−OH in 1∶2 molar ratio have been investigated and found to yield new derivatives of the type [Ln(SBH2)2](NO3)3 [whereLn=La(III), Pr(III), Nd(III) or Sm(III) andSBH2=Schiff base molecule, [o-HOC6H4C(CH3) : NCH2]2. On the basis of elemental analyses, conductivity and magnetic measurements and infrared spectra, plausible structures for the resulting complexes have been indicated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00906784
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  • 4
    Electronic Resource
    Electronic Resource
    Mixed ligand derivatives of Th(IV)-EDTA,-CDTA or-DTPA chelate with glycollic and malic acids (1976)
    Springer
    Monatshefte für Chemie 107 (1976), S. 991-997 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The interaction of 1∶1 Th(IV)-EDTA,-CDTA or-DTPA chelate with glycollic and malic acids has been investigated potentiometrically and the formation of 1∶1∶1 mixed ligand chelates inferred from the potentiometric curves. The hydrolysis and dimerization constants of the binary chelates and the equilibrium constants of the ternary derivatives have been evaluated at 30±1° and 35±1°C and also the thermodynamic functions, viz. ΔF 0, ΔH and ΔS.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00904488
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  • 5
    Electronic Resource
    Electronic Resource
    Tin(IV) complexes ofSchiff bases derived from salicylaldehyde and aminoalcohols (1976)
    Springer
    Monatshefte für Chemie 107 (1976), S. 1235-1240 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract 1∶1 and 1∶2 molar reactions of tin(IV) chloride with theSchiff bases, HO−C6H4CH∶NROH [where R=−(CH2)2−, −CH2−, −CH(CH3)−, −(CH2)3−, and −CH(C2H5)CH2−] have been studied in different stoichiometric ratios and derivatives of the type SnCl4(SBH2) and SnCl4(SBH2)2 (whereSBH2 represents theSchiff base molecule) have been isolated. These have been characterised by elemental analysis, conductivity measurements and I.R. spectral studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00903812
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  • 6
    Electronic Resource
    Electronic Resource
    Studies on mixed ligand complexes involving ligands of biological importance [Ni(II), Zn(II) or Cd(II)-1,10-phenanthroline — or 2,2′-bipyridyl-histidine] (1977)
    Springer
    Monatshefte für Chemie 108 (1977), S. 163-168 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The formation of mixed ligand complexes of the title metal ions with 1,10-phenanthroline (Phen) or 2,2′-bipyridyl (Bipy) in presence of histidine (His) has been studied pH-metrically. The stepwise formation of 1∶1∶1 mixed ligand complexes has been inferred from the potentiometric titration curves. Initially, a 1∶1 metal—Phen or—Bipy complex is formed in the lower buffer region and then the addition ofHis takes place resulting in 1∶1∶1 ternary complex formation. The formation constants (K MAL ) of the resulting mixed ligand complexes have been calculated at 30±1°C (μ=0.1 KNO3) and the values have been found to be higher than the formation constants of 1∶2 and lower than those of 1∶1 metal—His complexes. The order of stability in terms of metal ions follows the order, Ni(II)〉Zn(II)〉Cd(II).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00900918
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  • 7
    Electronic Resource
    Electronic Resource
    Schiff base complexes of dioxouranium(VI). VII. Dioxouranium(VI) acetate complexes with monobasic bidentate and bibasic tridentateSchiff bases (1979)
    Springer
    Monatshefte für Chemie 110 (1979), S. 899-906 
    Details
    ISSN: 1434-4475
    Keywords: Dioxouranium(VI) acetate complexes ; Infrared spectra ; Schiff bases ; complexes of
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurden in 1:1- und 1:2-molaren Reaktionen von UO2(OAc)2·2H2O mitSchiff-Basen (L) Komplexe des Typs UO2(OAc)2 L bzw. UO2(OAc)2 L 2 isoliert. Die Komplexe wurden mittels Elementaranalyse, Leitfähigkeitsmessungen und IR-Spektren untersucht.
    Notes: Abstract 1∶1 and 1∶2 molar reactions of dioxouranium(VI) acetate dihydrate with the monobasic bidentateSchiff bases,o-HOC6H4CH=NR oro-HOC10H6CH=NR (R=C2H5,n-C3H7,n-C4H9 or C6H5) and bibasic tridentateSchiff bases,o-HOC6H4CH=NR(OH) oro-HOC10H6CH=NR(OH) (R=−CH2CH(CH3)- or —CH2CH2CH2−) have been studied and derivates of the type UO2(OAc)2(SBH), UO2(OAc)2(SBH)2, UO2(OAc)2(SBH 2) and UO2(OAc)2(SBH 2)2 (whereSBH andSBH 2 represent monobasic bidentate and bibasic tridentateSchiff base molecules respectively) have been isolated. These have been characterized by elemental analysis, conductance measurements and IR spectral studies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00906686
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  • 8
    Electronic Resource
    Electronic Resource
    Mixed ligand complexes involving ligands of biological importance [Cu(II)-1,10-phenanthroline or 2,2′-bipyridyl-α-amino acids] (1979)
    Springer
    Monatshefte für Chemie 110 (1979), S. 149-155 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Bildung gemischter Komplexe von Cu(II) mit 1,10-Phenanthrolin oder 2,2′-Bipyridyl in Gegenwart einer α-Aminosäure (Glycin, Alanin, Phenylalanin oder Norleucin) wurde pH-metrisch untersucht. Die pH-Titration der Reaktionsmischungen in äquimolaren Konzentrationen zeigten, daß der gleichzeitige Zusatz der Liganden zu ternären 1∶1∶1-Komplexen führt. Die Gleichgewichts- und Bildungskonstanten der resultierenden ternären Komplexe wurden bestimmt (30±1 °C; μ=0,1 KNO3). Die Reihenfolge der Stabilität bezüglich der sekundären Liganden istPhe 〉 Ala 〉 Gly 〉 Norleu.
    Notes: Abstract The formation of mixed ligand complexes of Cu(II) with 1,10-phenanthroline or 2,2′-bipyridyl in presence of an α-amino acid (glycine, alanine, phenylalanine or norleucine) have been studied by the pH-metric method. The pH-titrations of the reaction mixtures in equimolar concentrations have shown the simultaneous addition of the ligands resulting 1∶1∶1 ternary complex formation. The equilibrium and formation constants of the resulting ternary complexes have been calculated (30±1 °C; μ=0.1 KNO3). The order of stability in terms of the secondary ligands has been found to be:Phe 〉 Ala 〉 Gly 〉 Norleu.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00903758
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  • 9
    Electronic Resource
    Electronic Resource
    Potentiometrische Studien an Mischligand-Komplexen (1975)
    Springer
    Monatshefte für Chemie 106 (1975), S. 849-855 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract 1∶1∶1, mixed ligand complex formation of La(III) with ethylenediamine-N,N,N′,N′-tetra-acetic acid and certain hydroxy acids such as malic, tartaric, 1-hydroxy-2-naphthoic and 2-hydroxy-3-naphthoic acids has been shown potentiometrically.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00900863
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  • 10
    Electronic Resource
    Electronic Resource
    pH-Metrische Studien an den binären Komplexen von Oxovanadium(IV) mit Hippur- und Anthranilsäure und Pyridin-2-aldoxim (1975)
    Springer
    Monatshefte für Chemie 106 (1975), S. 871-877 
    Details
    ISSN: 1434-4475
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract pH-metric studies on the interaction of oxovanadium(IV) with hippuric and anthranilic acids and pyridine-2-aldoxime indicate the formation of monohydroxo derivatives of 1:1 chelates. The equilibrium constants for the reaction, VO2++HA+H2O⇌VO(OH)A+2H+ have been calculated as 4.47±0.07 and 6.32±0.05 in the 1:1 VO2+-hippuric or anthranilic acid systems resp. and for the reaction, VO2++H2 A ++H2O⇋VO(OH)A+3H+ as 8.40±0.09 in the 1:1 VO2+-pyridine-2-aldoxime hydrochloride system at 30±0.5°C (μ=0.1-KNO3).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00900866
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