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Journals / Marmara Pharmaceutical Journal / 2017 / Cilt: 21 - Sayı: 2

Potentiometric and Chromatographic Study of Cu(II) and Al(III) Complexes of Quercetin

DENİZ ÇIKLA YILMAZ
Mürşit PEKİN
Pages
330–337
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Mobile phase was 0.01 M HClO 4 / 8.33 x 10 -5 M quercetin in Methanol (40/60), column was XTerra RP18, 5 μm, 4.6 x 150 mm , detector was Diode Array Detector at λ = 373 ve 421 nm (band width 4nm).

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, the stability constants of the copper(II) and aluminium(III) complexes of quercetin were determined potentiometrically by using Calvin-Bjerrum and Irwing Rossotti methods.
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Key Findings & Data:The protonation constants of quercetin were found: logK 1 = 11.15±0.118, logK 2 = 10.42±0.144, logK 3 = 9.44±0.162, logK 4 = 8.28±0.151.
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Conclusion & Impact:Mobile phase was 0.01 M HClO 4 / 8.33 x 10 -5 M quercetin in Methanol (40/60), column was XTerra RP18, 5 μm, 4.6 x 150 mm , detector was Diode Array Detector at λ = 373 ve 421 nm (band width 4nm).
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Özet

In this study, the stability constants of the copper(II) and aluminium(III) complexes of quercetin were determined potentiometrically by using Calvin-Bjerrum and Irwing Rossotti methods. The protonation constants of quercetin were found: logK 1 = 11.15±0.118, logK 2 = 10.42±0.144, logK 3 = 9.44±0.162, logK 4 = 8.28±0.151. For copper complex formation constant was found by Irwing-Rossotti method: logK 1 = 19.92±0.367 and for aluminium complex complex: logK 1 = 23.02±0.459. From the results, the components of quercetin / metal complexes are given as 1/1 both copper(II) and aluminium(III). A reversed phase high pressure liquid chromatographic method was developed for the metal complexes which were prepared according to potentiometric results with the ratio quercetin / metal =1/1. Mobile phase was 0.01 M HClO 4 / 8.33 x 10 -5 M quercetin in Methanol (40/60), column was XTerra RP18, 5 μm, 4.6 x 150 mm , detector was Diode Array Detector at λ = 373 ve 421 nm (band width 4nm).

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Cite This Article

YILMAZ, D. Ç., PEKİN, M. (2017). Potentiometric and Chromatographic Study of Cu(II) and Al(III) Complexes of Quercetin. Marmara Pharmaceutical Journal, Cilt: 21 - Sayı: 2, 330–337. https://ajindex.com/articles/283746

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