Thermal stability of new vanadyl complexes with flavonoid derivatives as potential insulin-mimetic agents

Badea M; Olar R; Marinescu DUivarosi VAldea VNicolescu TO

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Thermal stability of new vanadyl complexes with flavonoid derivatives as potential insulin-mimetic agents

机译：Thermal stability of new vanadyl complexes with flavonoid derivatives as potential insulin-mimetic agents

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A series of new complexes of the type VO(OH)L center dot nH(2)O ((1) L: fisetin, n = 3; (2) L: quercetin, n = 2; (3) L: morin, n = 4) were synthesised and characterised by analytical as well as IR and electronic data. The modification evidenced in IR spectra was correlated with the presence of flavonoid as bidentate in all complexes. The electronic reflectance spectra showed the d-d transition characteristic for the square-pyramidal stereochemistry of vanadium (IV) ion. The thermal analysis (TG, DTA) in synthetic air flow elucidated the composition and also the number and nature of the water molecules. The TG curves show three well-separated thermal events. The first corresponds to the water loss at lower temperatures, which is followed by flavonoid derivative decomposition and pyrolysis at higher temperatures. The final product is vanadium (V) oxide.

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来源
《Journal of thermal analysis and calorimetry》 |2010年第3期|823-827|共5页
作者
Badea M; Olar R; Marinescu DUivarosi VAldea VNicolescu TO;
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作者单位

Department of Inorganic Chemistry, Faculty of Chemistry,University of Bucharest, 90-92 Panduri Street, Sector 5,050663 Bucharest, Romania;

Department of Inorganic Chemistry, Carol Davila University of Medicine and Pharmacy, 6 Traian Vuia Street, Bucharest,Romania;

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正文语种英语
中图分类物理化学（理论化学）、化学物理学;
关键词
Flavonoid derivative; Vanadyl(IV) complex; Thermal stability;

Thermal stability of new vanadyl complexes with flavonoid derivatives as potential insulin-mimetic agents

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