Polarographic studies with the dropping mercury electrode. Part II. The absolute determination of reduction and depolarization potentials

Heyrovský, J.; Ilkovič, D.

doi:10.1135/cccc19350198

Cited by 158 publications

(22 citation statements)

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“…The slope of the plot of equation 4 had an average of 83 mV as opposed to a value of 19.7 mV expected for a 3-electron reversible process [3]. This value of 83 mV agrees with that of Challenger [2] who obtained the same value of the slope for Ga"' in 0.1 M KC1.…”

Section: The Half-wave (Ellz) and E3i4-e1/4 Potentialssupporting

confidence: 82%

“…Challenger [2] in his work on the polarography of gallium found a slope of 83 mV from a plot of potential versus log [I/Zd-I)] in 0.1 M KC1. The slope obtained was higher than the predicted value of 19.7 mV for a 3-electron reversible process [3]. Challenger also reported half-wave potentials for gallium in KNO3 and KCl as -1.05 V and -1.1 V (vs. SCE), respectively.…”

Section: Introductionmentioning

confidence: 89%

“…The half-wave potentials were evaluated directly from the polarograms and by use of the expression derived by Heyrovsky and Ilkovic [3]. For a reversible reaction the expression takes the form (4) where E is the potential of the working electrode and I is the current at a given potential.…”

Section: The Half-wave (Ellz) and E3i4-e1/4 Potentialsmentioning

confidence: 99%

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Diffusion coefficients of gallium(III) in potassium nitrate and potassium chloride supporting electrolytes

Kariuki

Dewald

1997

Electroanalysis

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Section: The Half-wave (Ellz) and E3i4-e1/4 Potentialssupporting

confidence: 82%

Section: Introductionmentioning

confidence: 89%

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Diffusion coefficients of gallium(III) in potassium nitrate and potassium chloride supporting electrolytes

Kariuki

Dewald

1997

Electroanalysis

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“…The supporting electrolytes in dichloromethane and acetonitrile were tetrabutylammonium tetrafluoroborate and tetraethylammonium perchlorate (0.1m) respectively, and all solutions were 10 À3 ± 10 À4 m in vanadium compound. Values for the reduction potential (E 1/2 ) and the number of electrons involved in the reversible process were obtained from the intercept and the slope of the plot of ln [(i d À i)/i] versus potential (E) according to the Heyrovsky ± Ilkovic equation [86] [Eq. (9)].…”

Section: Methodsmentioning

confidence: 99%

Synthetic Analogues for Oxovanadium(IV)–Glutathione Interaction: An EPR, Synthetic and Structural Study of Oxovanadium(IV) Compounds with Sulfhydryl‐Containing Pseudopeptides and Dipeptides

Tasiopoulos

Troganis

Evangelou

et al. 1999

Chemistry A European J

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(7) was prepared by the reaction of [VOCl 2 (thf) 2 ] with phen in a methanolic solution. The X-ray structure of 3 shows that the vanadium(iv) atom is ligated to a tridentate mpg 3À ligand at the S thiolato , N peptide and O carboxylato atoms. The X-ray structure of 7 is also reported. The optical, infrared, magnetic, electron paramagnetic resonance, and electrochemical properties of compounds 1 ± 5Ć H 3 OH and 7 were studied. Combination of the correlation plots of the EPR parameters g z versus A z , or the groundstate orbital population (b*) 2 versus A z , together with the additivity relationship, A z,calcd Sn i A zi /4, were shown to provide a powerful tool for probing the equatorial donor atoms in an oxovanadium(iv) compound and consequently in biomolecules. Thus, these methods provide valuable evidence for the assignment of the equatorial donor atoms for the V IV O 2 center of the V IV O 2 ± glutathione system at various pH values. Model NMR studies (interaction of vanadium(v) with H 3 mpg) showed that there is a possibility of vanadium(v) ligation to glutathione. The contribution of a deprotonated peptide(amide) nitrogen to A z is not a fixed quantity (it varies from 29 to 43 Â 10 À4 cm À1), but is influenced by the presence of the three other donor atoms in the equatorial plane and, in particular, their charge.

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“…form an amalgam with mercury [33][34][35] The concentration of the metal ion at the electrode surface, [M]o, is taken from equa tion (2.1). As an excess of the complexing agent is used, its concentration will be the same at the electrode surface as anywhere in the solution:…”

Section: (F) Polarography Of Nta Complexesmentioning

confidence: 99%

The Nature of Equilibria of Complexes and Methods of Study

Přibil¹

1972

Analytical Applications of EDTA and Related Compounds

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Polarographic studies with the dropping mercury electrode. Part II. The absolute determination of reduction and depolarization potentials

Cited by 158 publications

References 0 publications

Diffusion coefficients of gallium(III) in potassium nitrate and potassium chloride supporting electrolytes

Diffusion coefficients of gallium(III) in potassium nitrate and potassium chloride supporting electrolytes

Synthetic Analogues for Oxovanadium(IV)–Glutathione Interaction: An EPR, Synthetic and Structural Study of Oxovanadium(IV) Compounds with Sulfhydryl‐Containing Pseudopeptides and Dipeptides

The Nature of Equilibria of Complexes and Methods of Study

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