Coumarin-naphthohydrazone ligand with a rare coordination mode to form Mn(II) and Co(II) 1-D coordination polymers: synthesis, characterization, and crystal structure

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

“…Additionally, centrosymmetric is complex [Cu(Coum- O , O ) 2 (H 2 O) 2 [ 320 ]. Five coordinated complexes bear tridentate Coum- O , N , O ligands, its: [Cu(Coum- O , N , O )(C 2 H 5 OH)(NO 3 )] [ 321 ] and [Cu(Coumc- O , N , O ) 2 (NO 3 )] [ 322 ] with τ equals 0.08 and 0.2, what indicate square pyramidal geometry. Four-coordinated complexes: [Cu(Coum- O , N , S )(Cl)] and [Cu(Coum- O , N , S )(Cl)]H 2 O [ 323 ] [Cu(Coum- O , N , N )(Cl)] [ 324 ] have the ligand in the tridentate mode, all complexes adopt distorted square geometry.…”

“…All Co(II) complexes are in octahedral geometry: Three differ by substituent of coumarine molecule; however, the general formula [Co(Coum- O , N , O )(dpp- N , N , N )](ClO 4 )H 2 O [ 330 ] and chelating mode is the same. The complex [Co(coum- O , N , O )(CH 3 OH)(NO 3 ) [ 322 ] is polycyclic.…”

An exchange interaction of the antiferromagnetic nature in benzoate bridged Mn(ii) chains

“…Surprisingly, heptacoordinate Mn( ii ) 1D polymeric chains with {MnNO 6 } chromophores were proven relatively recently. 8,9 Only structural and some biological aspects were studied. No magnetic behaviour was observed in any of these compounds.…”