Features of the complexation of octadecane-2,4-dione and lanthanide ions in Langmuir monolayers

Resumo

Monolayers of octadecane-2,4-dione on the surfaces of EuCl₃ and TbCl₃ solutions in the concentration range of 1 × 10^–4 to 5 × 10^–3 M at pH 5.8 are studied. It is found that the limiting area of octadecane-2,4-dione molecule in a monolayer dependence on Eu³⁺ and Tb³⁺ concentration is of extreme nature. The formation of complex compounds in the ligand monolayer is postulated, and structures are proposed for these compounds at different concentrations of metal ions.