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Investigation of the molybdate(II)-3-hydroxyflavone complex

Untersuchung des Molybdat(II)-3-hydroxyflavon-Komplexes

  • Anorganische Und Physikalische Chemie
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Summary

Investigations on the composition of the molybdate(II)-3-hydroxyflavone complex and its stability constant have been carried out in 70% ethanolic solutions at room temperature (20°C), in the presence of a buffer atpH 6.30±0.05 and ionic strength 0.015. It has been found that a complex [MoO3(C15H9O3) 2−2 ] whose stability constant ranges from 15.13 atpH 6.25 to 13.02 atpH 7.00 is formed. Conditions are given for the determination of 3-hydroxyflavone by means of the reaction of complex formation in 50% ethanol atpH 6.60±0.05 and an ionic strength of 0.0225.

Zusammenfassung

Die Untersuchungen der Zusammensetzung des Komplexes und seiner Stabilitätskonstante wurden in 70% Ethanol, bei Raumtemperatur (20°C), in Anwesenheit von Puffer beipH=6.30±0.05 und der Ionenstärke 0.015 ausgeführt. Es wird der Komplex [MoO3(C15H9O3) 2−2 ] gebildet, die Stabilitätskonstanten reichen von 15.13 beipH 6.25 bis zu 13.02 beipH 7.00. Es wurden die Bedingungen zur quantitativen Bestimmung von 3-Hydroxyflavon mittels des Molybdenkomplexes in 50% Ethanol, beipH=6.60±0.05 und der Ionenstärke 0.0225 ermittelt.

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Authors and Affiliations

  1. Faculty of Pharmacy, Institute of Physical Chemistry, Dr. Subotića 8, YU-11001, Beograd, Yugoslavia

    Dušan Malešev, Zorica Radović & Milena Jelikić-Stankov

Authors
  1. Dušan Malešev
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  2. Zorica Radović
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  3. Milena Jelikić-Stankov
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Malešev, D., Radović, Z. & Jelikić-Stankov, M. Investigation of the molybdate(II)-3-hydroxyflavone complex. Monatsh Chem 122, 429–434 (1991). https://doi.org/10.1007/BF00809794

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  • DOI: https://doi.org/10.1007/BF00809794

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