Constraining and Tuning the Coordination Geometry of a Lanthanide Ion in Metal–Organic Frameworks: Approach toward a Single-Molecule Magnet

2015 ◽  
Vol 54 (21) ◽  
pp. 10224-10231 ◽  
Author(s):  
Ke Liu ◽  
Huanhuan Li ◽  
Xuejing Zhang ◽  
Wei Shi ◽  
Peng Cheng
2020 ◽  
Vol 49 (40) ◽  
pp. 14123-14132
Author(s):  
Chengcheng Zhang ◽  
Xiufang Ma ◽  
Peipei Cen ◽  
Xiaoyong Jin ◽  
Jinhui Yang ◽  
...  

The zero-field single-molecule magnet behaviour and luminescence properties of 3D Ln-MOFs with a versatile pyridyl-decorated dicarboxylate.


2021 ◽  
Vol 9 ◽  
Author(s):  
Xiao-Jiao Song ◽  
Zhao-Bo Hu ◽  
Miao-Miao Li ◽  
Xin Feng ◽  
Ming Kong ◽  
...  

Two metal-organic frameworks (MOFs), [Dy(BDC)(NO3)(DMF)2]n (1, H2BDC = terephthalic acid) and [Dy(BDC)(NO3)]n (1a), were synthesized. The structures of MOFs 1 and 1a are easy to be reversibly transformed into each other by the desorption or adsorption of coordination solvent molecules. Accordingly, their magnetic properties can also be changed reversibly, which realizes our goals of manipulating on/off single-molecule magnet behaviour. MOF 1 behaves as a single-molecule magnet either with or without DC field. Contrarily, no slow magnetic relaxation was observed in 1a both under zero field and applied field.


2018 ◽  
Vol 54 (72) ◽  
pp. 10183-10186 ◽  
Author(s):  
Mengmeng Wang ◽  
Xixi Meng ◽  
Fen Song ◽  
Yanfei He ◽  
Wei Shi ◽  
...  

The structural transformation between Ln-MOFs 1 and 2 and the corresponding switchable “on/off” single-molecule magnet behavior have been studied.


2016 ◽  
Vol 45 (48) ◽  
pp. 19226-19229 ◽  
Author(s):  
Yongjian Li ◽  
Taishan Wang ◽  
Haibing Meng ◽  
Chong Zhao ◽  
Mingzhe Nie ◽  
...  

The hysteresis and quantum tunneling of magnetism for a metallofullerene DySc2N@C80 single-molecule magnet were modulated through trapping in MOF-177.


2019 ◽  
Vol 58 (21) ◽  
pp. 14498-14506 ◽  
Author(s):  
Lucas H. G. Kalinke ◽  
Danielle Cangussu ◽  
Marta Mon ◽  
Rosaria Bruno ◽  
Estefania Tiburcio ◽  
...  

Author(s):  
George E. Kostakis ◽  
Ian J. Hewitt ◽  
Ayuk M. Ako ◽  
Valeriu Mereacre ◽  
Annie K. Powell

With the discovery of the phenomenon of single-molecule magnetism, coordination chemists have turned their attention to synthesizing cluster aggregates of paramagnetic ions. This has led to a plethora of coordination clusters with various topologies and diverse magnetic properties. In this paper, we present ways of describing and understanding such compounds as well as outlining a new approach, which we have recently developed, to describing cluster topology. Our approach is based upon and pays tribute to the huge contribution made to coordination chemistry through the development of the Schläfli symbols for describing architectures. To illustrate the developments that are taking place in modern coordination chemistry, we start with some basic definitions of relevance to what follows. Then we describe approaches to discovering new magnetically interesting 3d/4f clusters, assigning their topological descriptions. Finally, we show how the concepts behind the construction of metal–organic frameworks can be extended to using clusters as nodes in the frameworks to give super metal–organic frameworks.


2017 ◽  
Vol 46 (16) ◽  
pp. 5337-5343 ◽  
Author(s):  
Yan Peng ◽  
Valeriu Mereacre ◽  
Christopher E. Anson ◽  
Annie K. Powell

The anisotropy of a single DyIII can be steered through subtle changes in the coordination geometry of the CoII ions in CoII2DyIII2 butterfly compounds resulting from changing the coordinated solvent molecule on the CoII ion.


CrystEngComm ◽  
2017 ◽  
Vol 19 (37) ◽  
pp. 5558-5564 ◽  
Author(s):  
Constance R. Pfeiffer ◽  
Naomi Biggins ◽  
William Lewis ◽  
Neil R. Champness

The influence of intermolecular interactions and metal coordination geometry on MOF framework dimensions are discussed.


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