Spectrophotometric study of complexation between a series of salophens and some transition metal ions in DMF solvent

Abstract

KEYWORDSThe complexation behaviour of some salophen,s derivatives with few transition and heavy metal cations in N,N'-dimethyl formamid as nonaqueous solvent at 25 o C and 0.05 M tetra ethylammonium perchlorate to investigate the effect of structure were studied by spectrophotometric method. The formation of complexes between ligands and metal ions of the types ML, ML2 or M2L was observed. The overall stability constants of such complexes were evaluated by computer refinement of absorption-mole ratio data using the KINFIT program.

Application of cloud point preconcentration and flame atomic absorption spectrometry for the determination of cadmium and zinc ions in urine, blood serum and water samples

“…Complexation occurs through binding of Zn 2+ or Cd 2+ ions to nitrogen atoms, leading to the ML, or ML, ML 2 models. Formation constants and stoichiometries of complexes were calculated using the Kinfit program 25,[40][41][42][43] and results are shown in Table 1.…”