Metal complexes of perimidine and Schiff base ligands bearing both naphthalene and chromone moieties: synthesis and catalytic activity

作者：Beyazit N^*; Cobanoglu S; Demetgul C

来源：Bulgarian Chemical Communications, 2017, 49: 115-121.

• Schiff base
• perimidine
• metal complexes
• catecholase activity

A new perimidine and a new Schiff base compounds were prepared by the condensation of visnagin derivative containing a carbonyl group with 1,8-diaminonaphthalene (1,8-DAN) and 2,3-diaminonaphthalene (2,3-DAN), respectively. Metal complexes of these chromone type ligands were also isolated by using the Cu(II) and Fe(II) ions. The synthesized compounds were characterized by UV-Vis, FT-IR, H-1&C-13 NMR, mass spectrometry, elemental and AAS analyses and also magnetic susceptibility and molar conductivity measurements. Catecholase activity of the complexes was investigated in methanol medium using 3,5-di-tert-butylcatechol (3,5-DTBC) as model substrate and the results showed that all complexes are active for catalyzing the oxidation of 3,5-DTBC to the corresponding quinone with first order reaction kinetics. Fe(II) complex of Schiff base ligand has been found to exhibit the best catecholase activity with a turnover number value of 890.1 h(-1).

• 出版日期2017