2 documents found, page 1 of 1
Lanthanide complexes of macrocyclic derivatives useful for medical applications
Delgado, R; Costa, J; Guerra, KP; Lima, LMPThe protonation constants of two series of tetraazamacrocyclic ligands with acetate and methylphosphonate pendant arms, as well as their stability constants with Cu2+, La3+, Sm3+, and Ho3+, were determined. All the values were determined in aqueous solution at 298.0 K and 0.10 mol dm(-3) in N(CH3)(4)NO3. In the first series, the effect of both types of pendant arms was observed by appending them in the same mac...
Sm-153 and Ho-166 complexes with tetraaza macrocycles containing pyridine and m...
Marques, F; Guerra, KP; Gano, L; Costa, J; Campello, MP; Lima, LMP; Delgado, R; Santos, IA set of tetraaza macrocycles containing pyridine and methylcarboxylate (ac(3)py14) or methylphosphonate (MeP(2)py14 and P(3)py14) pendant arms were prepared and their stability constants with La3+, Sm3+, Gd3+ and Ho3+ determined by potentiometry at 25degreesC and 0.10 M ionic strength in NMe4NO3. The metal:ligand ratio for Sm-153 and Ho-166 and for ac(3)py14, MeP(2)py14 and P(3)py14, as well as the pH of the r...