Study of benzoazacrown ligands complex formation with yttrium, lutecium and lanthanum cations in aqueous solutions
The protonation constants of benzoazacrown-compound L and the stability constants of the complexes formed by them with Y 3+, Lu 3+, La 3+ metal ions, were determined by potentiometric methods, at 25 0C and ionic strength 0.10 mol dm -3 in potassium nitrate. Fast complex formation is shown.