Modulating the relaxation dynamics via structural transition from a dinuclear dysprosium cluster to a nonanuclear cluster.
- Resource Type
- Article
- Authors
- Hu, Peng; Cao, Ling-hui; Liu, Ao-gang; Zhang, Yi-quan; Zhang, Tian-le; Li, Bao
- Source
- Dalton Transactions: An International Journal of Inorganic Chemistry. 10/7/2021, Vol. 50 Issue 37, p12814-12820. 7p.
- Subject
- *DYSPROSIUM
*MAGNETIC relaxation
*STRUCTURE-activity relationships
*ACTIVATION energy
*AB-initio calculations
*STRUCTURAL dynamics
- Language
- ISSN
- 1477-9226
A dinuclear dysprosium cluster [Dy2(NO3)4(H2O)2(L)2]·2CH3CN was successfully prepared by employing HL (HL = 2,6-dimethoxyphenol) and Dy(NO3)3·6H2O in a mixture of CH3OH and CH3CN. The conversion of this Dy2 compound by reaction with additional deprotonated ligand generated a Dy9 cluster [Dy9(μ4-OH)2(μ3-OH)8(μ2-OCH3)4(NO3)8(H2O)8(L)4](OH)·2H2O with the well-known "diabolo" topology. Magnetic investigation revealed that both of the clusters exhibit typical SMM characteristics, and variable magnetic relaxation with the energy barrier changing from 217.87 K to 9.24 K along with the transition from a dinuclear dysprosium cluster to a nonanuclear one. Ab initio calculations further confirm the corresponding structure–activity relationships that originate the different magnetic behaviours. This design may afford a feasible strategy for modulating the magnetic relaxation dynamics of polynuclear systems. [ABSTRACT FROM AUTHOR]