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Related Experiment Video

Updated: Jun 28, 2026

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
12:33

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

Published on: November 15, 2013

[Not Available].

N Delannoy1, J M Degorre, A Delannoy

  • 1Laboratoire de Chimie Analytique, Ecole Nationale Supérieure de Chimie de Lille, B.P. 40, 59650 Villeneuve d'Ascq, France.

Talanta
|July 1, 1981
PubMed
Summary
This summary is machine-generated.

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Iron(II) forms stable triviolurate and trithioviolurate complexes in aqueous solutions. Stability constants were determined using conductimetry, potentiometry, and spectrophotometry, confirming complex formation and providing quantitative stability data.

Area of Science:

  • Coordination Chemistry
  • Inorganic Chemistry
  • Analytical Chemistry

Context:

  • Investigating the complexation behavior of iron(II) ions.
  • Exploring the coordination chemistry of violuric acid and 2-thiovioluric acid.
  • Utilizing multiple analytical techniques for comprehensive characterization.

Purpose:

  • To confirm the formation of iron(II) complexes with violuric acid and 2-thiovioluric acid.
  • To determine the stability constants of these newly formed complexes.
  • To compare the results obtained from different analytical methods.

Summary:

  • The study confirms the formation of triviolurate [Fe(C(4)H(2)N(3)O(4))3] and trithioviolurate [Fe(C(4)H(2)N(3)O(3)S)3] complexes with iron(II) in aqueous media at 25°C.
  • Maximum absorption wavelengths for these complexes were identified at 605 nm (violurate) and 615 nm (thioviolurate).

Related Experiment Videos

Last Updated: Jun 28, 2026

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities
12:33

High-throughput Fluorometric Measurement of Potential Soil Extracellular Enzyme Activities

Published on: November 15, 2013

  • Stability constants were quantified using potentiometry and spectrophotometry at an ionic strength of 0.5M, yielding consistent results for both complexes.

    • Impact:

    • Provides quantitative data on the stability of iron(II) complexes with violuric acid derivatives.
    • Demonstrates the utility of conductimetry, potentiometry, and spectrophotometry in characterizing metal-ligand complexes.
    • Contributes to the understanding of iron coordination chemistry and the properties of violuric acid-based ligands.