Novel copper(II), cobalt(II) and nickel(II) complexes with 5-(4-oxo-4H-chromen-3-yl)-4,5-dihydro-1,3,4-thiadiazole-2-carboxamide: Synthesis, structure, spectroscopic studies

Overview of the Antioxidant and Anti-Inflammatory Activities of Selected Plant Compounds and Their Metal Ions Complexes

“…Most of the Cu(II) chromone complexes bear O , N , S donors as ligands in tridentate mode, where oxygen is bound in chromone moiety in C4 position, while nitrogen and sulphur are a part of thiosemicarbazones and thiosemicarbazides derivatives substituted to the main moiety at position C3. In the dinuclear complexes—[Cu(ThiosemiChrom-O,N,S)NO 3 ] 2 [ 306 ], [Cu(ThiosemiChrom- O , N , S )Cl] 2 [ 307 ] and [Cu(ThiosemiChrom- O , N , S )Cl] 2 [ 308 ]—two Cu atoms are double-bridged to a central Cu(II) atom via oxygen (NO 3 ) and chlorine atoms. Complex [Cu(Chrom-O)(Chrom-N)Cl] 2 [ 309 ] is also dinuclear, however the ligands are bound to copper atom via oxygen (C4) and nitrogen (C7).…”