synthesis nickel (ii) and copper (ii) complexes with a new oxazoline ligand, bis 2-(2-phenyl-2-(pyridin-2-yl) oxazolin-3-yl)ethanol

In this study, a new oxazoline derivative containing 2-phenyl-2-(pyridine-2-yl) oxazoline-3-yl)ethanol (poe) was synthesized from the solvent-free reaction of diethanolamine with 2-benzoylpyridine under microwave conditions. the poe ligand can coordinate to the metal through the amino and pyridine nitrogen atoms. the complexes [ni(poe)cl2(h2o)2] and [cu(poe)2br2] were synthesized from the reaction of the poe ligand with nickel chloride hexahydrate and copper bromide tetrahydrate, respectively. these complexes were characterized by elemental analysis, ft-ir, uv-vis, conductivity, and melting point methods. elemental analysis of the [ni(poe)cl2(h2o)2] and [cu(poe)2br2] complexes indicates that the poe to nickel and copper metal ratio is 1:1 and 1:2, respectively. in the ft-ir spectrum of the poe ligand, the stretching vibration of c=o in the starting materials 2-benzoylpyridine and nh2 in diethanolamine are absent, and a new c=n stretching vibration is observed. the vibrational bands of ni-o, ni-n, and ni-cl in the [ni(poe)cl2(h2o)2] complex and cu-br and cu-n in the [cu(poe)2br2] complex are observed. the electrical conductivity of the complexes indicates that they are neutral.