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All Journal JURNAL KIMIA SAINS DAN APLIKASI
Peni Peni
Department of Chemistry, Tanjungpura University Pontianak
Chemical Engineering, Chemistry & Bioengineering Chemistry Engineering

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Synthesis of Metal–Curcumin Complex Compounds (M = Na⁺, Mg²⁺, Cu²⁺) Peni Peni; Risya Sasri; Imelda Hotmarisi Silalahi
Jurnal Kimia Sains dan Aplikasi Vol 23, No 3 (2020): Volume 23 Issue 3 Year 2020
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3087.771 KB) | DOI: 10.14710/jksa.23.3.75-82

Abstract

Curcumin complex compound, MLn (L = curcumin; M = Na+, Mg2+, Cu2+) has been synthesized from the reaction between curcumin and metal precursors (NaCl, MgSO4.7H2O, CuCl2.2H2O) in ethanol under reflux conditions. Synthesis takes place through the reaction between the metal ions Na+, Mg2+, or Cu2+ as the central atom and curcumin as the ligand. Curcumin has been consumed after the reaction lasts for four hours, shown by thin-layer chromatography in which a new spot appears at higher Rf as the spot of curcumin disappears in the reaction mixture. Compared with the spectrum of  curcumin, the FTIR spectra of the complexes  show changes in the absorption bands and shifts of wave numbers particularly in absorption bands of phenolic –OH and C=O enol groups which strongly indicates the coordination of metal ions with the curcumin ligand which is proposed to be in β–1,3 diketone system. Also, the FTIR spectra of the reaction product showed typical absorption bands for the metal-oxygen group, M–O, at 524 cm–1, 670 cm–1 and 470 cm–1 in Na+–curcumin, Mg2+–curcumin and Cu2+–curcumin, respectively.
Co-Authors Imelda Hotmarisi Silalahi Risya Sasri