Coordination-triggered redox activity of early and late lanthanide calix[4]arene complexes.
Dalton Trans
; 53(11): 4930-4936, 2024 Mar 12.
Article
de En
| MEDLINE
| ID: mdl-38420995
ABSTRACT
The methylation of p-tert-butylcalix[4]arene in the distal 1,3-phenolic sites provides H2L = {p-tert-butylcalix[4](OMe)2(OH)2arene}. This unit acts as a rigid coordinating ligand to early and late lanthanide metal ions, enabling the construction of two families of mononuclear compounds featuring (N(nBu)4)[LnIIIL(acac)2]·CH3CN (Ln = Pr (1), Nd (2), Ho (3), and Er (4)) and (N(nBu)4)2[LnIIIL{Mo5O13(OMe)4(NO)}]·CH2Cl2 (Ln = Nd (5) and Er (6)). The metal ions adopt distorted bicapped trigonal prismatic coordination environments, resulting in slow relaxation of the magnetization for 4. These compounds exhibit reversible redox waves at positive potentials, centered within the calix[4]arene ligand, representing a new type of calix[n]arene-based electrochemical activity induced by coordination to the metal centers.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Langue:
En
Journal:
Dalton Trans
/
Dalton trans (2003. Online)
/
Dalton transactions (2003. Online)
Sujet du journal:
QUIMICA
Année:
2024
Type de document:
Article
Pays d'affiliation:
Allemagne
Pays de publication:
Royaume-Uni