The role of the capping bond effect on pyclen Y-nat(3+)/Y-90(3+) chelates: full control of the regiospecific N-functionalization makes the difference
Résumé
Thanks to a smart regiospecific N-functionalization, a pyclen based ligand bearing one picolinate and two acetate arms organized in a dissymmetric manner was synthesized for Y3+ complexation, and compared to its symmetric analogue. The nature of the capping bonds around the metal coordination environment has a dramatic effect on the properties of the chelate, the Y-nat(3+) and Y-90(3+) dissymmetric derivatives presenting enhanced thermodynamic stability and kinetic inertness.
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EstebanGomez_David_2017_Role_capping_bond_effect_pyclen_chelates_full_control_regiospecific.pdf (634.33 Ko)
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