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Title: A trinuclear oxo-chromium(III) complex containing the natural flavonoid primuletin: Synthesis, characterization, and antiradical properties

Journal Article · · Molecules
 [1];  [2];  [2];  [2];  [3];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Univ. Presbiteriana Mackenzie, Sao Paulo (Brazil)
  3. Univ. de Sao Paulo, Sao Paulo (Brazil)

A new trinuclear oxo-centered chromium(III) complex with formula [Cr₃O(CH₃CO₂)₆(L)(H₂O)₂] (L = 5-hydroxyflavone, known as primuletin) was synthetized and characterized by ESI mass spectrometry, thermogravimetry, and ¹H-NMR, UV-Vis, and FTIR spectroscopies. In agreement with the experimental results, DFT calculations indicated that the flavonoid ligand is coordinated to one of the three Cr(III) centers in an O,O-bidentate mode through the 5-hydroxy/4-keto groups. In a comparative study involving the uncoordinated primuletin and its corresponding complex, systematic reactions with the free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) showed that antiradical activity increases upon complexation.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1208875
Journal Information:
Molecules, Journal Name: Molecules Journal Issue: 4 Vol. 20; ISSN MOLEFW; ISSN 1420-3049
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (4)

Determination of Anticancer Zn(II)–Rutin Complex Structures in Solution through Density Functional Theory Calculations of 1H NMR and UV–VIS Spectra journal February 2020
Metal-ligand coordination and antiradical activity of a trichromium(III) complex with the flavonoid naringenin journal May 2017
Metal-ligand coordination and antiradical activity of a trichromium(III) complex with the flavonoid naringenin text January 2017
Metal-ligand coordination and antiradical activity of a trichromium(III) complex with the flavonoid naringenin text January 2017