Fine-tuning water exchange on GdIII poly(amino carboxylates) by modulation of steric crowding
作者:Zoltán Jászberényi、Angélique Sour、Éva Tóth、Meriem Benmelouka、André E. Merbach
DOI:10.1039/b506702b
日期:——
In the objective of optimizing water exchange rate on stable, nine-coordinate, monohydrated GdIIIpoly(amino carboxylate) complexes, we have prepared monopropionate derivatives of DOTA4− (DO3A-Nprop4−) and DTPA5− (DTTA-Nprop5−). A novel ligand, EPTPA-BAA3−, the bisamylamide derivative of ethylenepropylenetriamine-pentaacetate (EPTPA5−) was also synthesized. A variable temperature 17O NMR study has