Synthesis of mononuclear nickel(II) and copper(II) complexes using compartmental ligands: X-ray and electrochemical studies

Biological activity studies on metal complexes of novel tridentate Schiff base ligand. Spectroscopic and thermal characterization

“…The magnetic moment value of 2.15 B.M. falls within the range normally observed for octahedral Cu(II) complexes [38]. A moderately intense peak observed at 26,395 cm À1 is due to ligand to metal charge transfer transition [34].…”

Binding studies of ( N -(methylpyridin-2-yl)-amidino- O -methylurea)copper(II) complexes to four nitrogenous bases and 5′-GMP

“…The g tensor values are used to examine the electronic ground state of the copper center. All bound complexes show an EPR spectrum with the g || and A || values in the range of 2.21-2.25 and 166-191 Â 10 À4 cm À1 , respectively, as expected for square pyramidal copper(II) complexes [45][46][47][48]. They presented the trend of g || > g \ > 2.0 and the G value (G = (g || À 2)/(g \ À 2)) higher than 4.0 suggesting that the unpaired electron of the copper(II) ion locates in the ground state d x 2 À y 2 orbital of an axial square-based geometry [49,50].…”

Synthesis, crystal structure and characterization of two new copper(II) complexes of Schiff bases derived from furfurylamine

“…In recent years, there has been enhanced interest in the synthesis and characterization of such complexes due to their important catalytic, magnetic and biological properties. Schiff base complexes of copper are also no exception in these respects [1][2][3][4][5][6]. Although Schiff bases derived from salicylaldehyde and various amines have extensively been used to synthesize many complexes of copper(II), complexes with furfurylamine as the amine counterpart of the Schiff base have received very scanty attention.…”