Citation: Tian Le LIN, Bao Zhen YAN, Gao Fei HU, Mei WANG. Spectroscopic and Structural Study of the 1:2 Aluminium(Ⅲ) Complex of Quercetin[J]. Chinese Chemical Letters, ;2006, 17(7): 937-940. shu

Spectroscopic and Structural Study of the 1:2 Aluminium(Ⅲ) Complex of Quercetin

School of Science, Beijing University of Chemical Technology, Beijing 100029

Received Date: 1 December 2005

Complex formation between aluminium and quercetin(Q) in methanol was investigated by means of ²⁷Al solid-state, ¹³C and ¹H NMR and MS(ESI), UV and IR spectra. Formation of the 1:2 complex was favored in methanol relative to all other solvent and the predominant species observed of Al(Ⅲ) has a 1:2 stoichiometry. The fine structure of 1:2 aluminum complex of quercetin was that the aluminum central atom chelated with two quercetin molecules and two methoxyl groups between two five membered rings, its coordination is six, the chelated site was 3-hydroxy-4-carbonyl.
- Quercetin,
- Al(Ⅲ) complexation,
- stoichiometry,
- NMR
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