Abstract
Rutin and calcium acetate at 86°C, pH = 8.5, reflux 6h, A rutin-ca complex was synthesised in methanol. UV-Vis spectroscopy: band I shifted from 355 nm to 359 nm, red shifted to 4 nm. Band II moved from 257 nm to 266 nm and shifted red by 9 nm. IR: the absorption peak of ruthenium is broadened, υC = O 1,632.45 cm–1, red shift of 23 cm–1, the characteristic absorption peak of benzene ring has not changed, and the absorption peak of 618.43 cm–1, metal coordination bond υCa-O stretching vibration peak. 1H-NMR: 3'-OH and 4'-OH hydroxyl groups disappear, showing coordination with calcium ions. Thermal analysis showed rutin with ane calcium ion complex.
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