1994
DOI: 10.1007/bf00811513
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Potentiometrische Untersuchung der Bildungsgleichgewichte von bin�ren und tern�ren Komplexen von Kobalt(II) mit Adenosin-5?-mono-, -di- und -triphosphat und einigen biologisch bedeutenden polybasischen Sauerstoffs�uren

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Cited by 11 publications
(9 citation statements)
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“…Formation constants for the normal ternary complexes and protonation constants for primary and secondary ligands were refined with the SUPERQUAD computer program (Gans et al, 1985). The same computer program has been used by the author in previous publications (Azab et al, 1993(Azab et al, , 1994(Azab et al, , 1995. The constants were refined by minimizing U, defined by where E obs and E calc refer to the measured potential and that calculated from eq 1.…”
Section: Resultsmentioning
confidence: 99%
“…Formation constants for the normal ternary complexes and protonation constants for primary and secondary ligands were refined with the SUPERQUAD computer program (Gans et al, 1985). The same computer program has been used by the author in previous publications (Azab et al, 1993(Azab et al, , 1994(Azab et al, , 1995. The constants were refined by minimizing U, defined by where E obs and E calc refer to the measured potential and that calculated from eq 1.…”
Section: Resultsmentioning
confidence: 99%
“…Ternary complexes of trivalent lanthanides with ATP and EDTA have been investigated. 3,4 In continuation of our previous work on ternary complexes containing nucleotides [5][6][7][8][9] the mixed ligand complexes of the type Ln(III) + nucleotide + zwitterionic buffer ligands (Ln(III) + NU + Z) (see Chart 1) where nucleotide ) AMP, GMP, or CMP, zwitterionic buffer ligands ) MOPSO, MES, ACES, or HEPES, and Ln(III) ) La(III), Ce(III), Pr(III), or Eu(III) have been investigated by potentiometric pH-titrations to determine the formation constants of the normal and protonated mixed ligand complexes formed in solution.…”
Section: Introductionmentioning
confidence: 86%
“…Ternary complexes of transition divalent metal ions with AMP, ADP, ATP, and other secondary ligands have been investigated. For an improved understanding of the mechanism leading to mixed-ligand complexes, the systems M(II) + NU + Z, where NU = AMP, ADP, or ATP, Z = MOPS, AMPSO, HEPPSO, PIPES, or POPSO, and M(II) = Cu(II), Co(II), Ni(II), Mn(II), Zn(II), Ca(II), or Mg(II), have been investigated by potentiometric pH titration. The stability constants of the normal and protonated mixed-ligand complexes formed in solution have been determined.…”
Section: Introductionmentioning
confidence: 99%
“…pH against a volume of 0.0330 mol dm -3 KOH for the Mn(II) + ATP + AMPSO system at (25.0 ( 0.1)°C and I ) 0.1 mol dm -3 KNO3: (a) 0.004 mol dm -3 HNO3 + 0.001 mol dm -3 ATP (2); (b) 0.004 mol dm -3 HNO3 + 0.001 mol dm -3 Mn(II) + 0.001 mol dm -3 ATP (f); (c) 0.004 mol dm -3 HNO3 + 0.001 mol dm -3 AMPSO (+); (d) 0.004 mol dm -3 HNO3 + 0.001 mol dm -3 Mn(II) + 0.001 mol dm -3 AMPSO (]); (e) 0.004 mol dm -3 HNO3 + 0.001 mol dm -3 Mn(II) + 0.001 mol dm -3 ATP + 0.001 mol dm -3 AMPSO (b).HEPPSO, Ca(II) + ATP + HEPPSO, and Mg(II) + ATP + HEPPSO systems, complexation starts at the pH range of 3.6-7 8. Different values for log K and log , which have been calculated and refined using the experimental data, are given inTables1-7.…”
mentioning
confidence: 99%