Fine-tuning water exchange on Gd III poly (amino carboxylates) by modulation of steric crowding

Z Jászberényi, A Sour, É Tóth, M Benmelouka…

Index: Jaszberenyi, Zoltan; Sour, Angelique; Toth, Eva; Benmelouka, Meriem; Merbach, Andre E. Dalton Transactions, 2005 , # 16 p. 2713 - 2719

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Citation Number: 39

Abstract

In the objective of optimizing water exchange rate on stable, nine-coordinate, monohydrated GdIII poly (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 been performed on their GdIII ...