| Autor: |
Pirc, Elizabeta, Modec, Barbara, Cer-Kerčmar, Ksenija, Bukovec, Peter |
| Zdroj: |
Chemical Monthly / Monatshefte für Chemie; Jun2014, Vol. 145 Issue 6, p911-920, 10p |
| Abstrakt: |
This study reports the synthesis of novel mixed ligand complexes of copper(II) with the xanthurenate anion (Xan) and nicotinamide ligand (NA): [Cu(Xan)(NA)(HO)]·HO and [Cu(Xan)(NA)(HO)]·3HO. The compounds were characterized by single crystal X-ray diffraction, IR spectroscopy, and thermal analysis. The first coordination sphere of copper(II) in [Cu(Xan)(NA)(HO)] consists of a water molecule, a nicotinamide ligand coordinated via the pyridine nitrogen and a xanthurenate dianion coordinated in a tridentate manner via carboxylate oxygen, nitrogen, and phenolate oxygen. The five donor atoms define a distorted square pyramid whose apex is occupied by the aqua ligand. The antioxidant activities of the compounds were investigated by the 2,2-diphenyl-1-picrylhydrazyl scavenging method, which showed that the IC values for both compounds are higher than for related [Cu(Xan)(HO)] complex. The title compounds also exhibit superoxide dismutase mimetic activity. Graphical abstract: [Figure not available: see fulltext.] [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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