scholarly journals Two 3D Mn-based coordination polymers: synthesis, structure and magnetocaloric effect

RSC Advances ◽  
2020 ◽  
Vol 10 (56) ◽  
pp. 33628-33634
Author(s):  
Ning-Fang Li ◽  
Ye-Min Han ◽  
Jia-Nian Li ◽  
Jia-Peng Cao ◽  
Ze-Yu Du ◽  
...  

Two 3D coordination polymers (MnII6 and MnII12MnIII6) were synthesized. Magnetic studies revealed that they are potential magnetic materials.

2016 ◽  
Vol 2016 (24) ◽  
pp. 3969-3977 ◽  
Author(s):  
Gang Xiong ◽  
Li-xin You ◽  
Bao-yi Ren ◽  
Yong-ke He ◽  
Shu-ju Wang ◽  
...  

2021 ◽  
Author(s):  
Jun-Jie Hu ◽  
Yan Peng ◽  
Sui-Jun Liu ◽  
He-Rui Wen

The molecular magnetorefrigerant materials for low-temperature magnetic refrigeration and single-molecule magnets for high-density information storage and quantum computing have received extensive attention from chemists and magnetic experts. Lanthanide ions with...


2007 ◽  
Vol 46 (14) ◽  
pp. 5528-5536 ◽  
Author(s):  
Eric J. Schelter ◽  
David E. Morris ◽  
Brian L. Scott ◽  
Joe D. Thompson ◽  
Jaqueline L. Kiplinger

2019 ◽  
Vol 43 (33) ◽  
pp. 12941-12949 ◽  
Author(s):  
Wen-Min Wang ◽  
Li Zhang ◽  
Xian-Zhen Li ◽  
Li-Yuan He ◽  
Xin-Xin Wang ◽  
...  

A family LnIII4 clusters were successfully synthesized and structurally characterized. Magnetic studies show that Gd4 cluster displays magnetic refrigeration, while Dy4 cluster demonstrates two distinct slow magnetic relaxation processes.


2013 ◽  
Vol 36 ◽  
pp. 122-125 ◽  
Author(s):  
Na Xu ◽  
Xiao-Hang Qiu ◽  
Chao Wang ◽  
Jinkui Tang ◽  
Peng Cheng ◽  
...  

2018 ◽  
Vol 47 (25) ◽  
pp. 8337-8345 ◽  
Author(s):  
Lidia Armelao ◽  
Daniela Belli Dell'Amico ◽  
Gregorio Bottaro ◽  
Luca Bellucci ◽  
Luca Labella ◽  
...  

4f–3d CPs: structural, PL and magnetic studies.


2019 ◽  
Vol 75 (8) ◽  
pp. 1073-1083 ◽  
Author(s):  
Feng Su ◽  
Cheng-Yong Zhou ◽  
Lin-Tao Wu ◽  
Xi Wu ◽  
Jing Su ◽  
...  

Two CoII-based coordination polymers, namely poly[(μ4-biphenyl-2,2′,5,5′-tetracarboxylato){μ2-1,3-bis[(1H-imidazol-1-yl)methyl]benzene}dicobalt(II)], [Co2(C16H6O8)(C14H14N4)2] n or [Co2(o,m-bpta)(1,3-bimb)2] n (I), and poly[[aqua(μ4-biphenyl-2,2′,5,5′-tetracarboxylato){1,4-bis[(1H-imidazol-1-yl)methyl]benzene}dicobalt(II)] dihydrate], {[Co2(C16H6O8)(C14H14N4)2(H2O)2]·4H2O} n or {[Co2(o,m-bpta)(1,4-bimb)2(H2O)2]·4H2O} n (II), were synthesized from a mixture of biphenyl-2,2′,5,5′-tetracarboxylic acid, i.e. [H4(o,m-bpta)], CoCl2·6H2O and N-donor ligands under solvothermal conditions. The complexes were characterized by IR spectroscopy, elemental analysis, single-crystal X-ray diffraction and powder X-ray diffraction analysis. The bridging (o,m-bpta)4− ligands combine with CoII ions in different μ4-coordination modes, leading to the formation of one-dimensional chains. The central CoII atoms display tetrahedral [CoN2O2] and octahedral [CoN2O4] geometries in I and II, respectively. The bis[(1H-imidazol-1-yl)methyl]benzene (bimb) ligands adopt trans or cis conformations to connect CoII ions, thus forming two three-dimensional (3D) networks. Complex I shows a (2,4)-connected 3D network with left- and right-handed helical chains constructed by (o,m-bpta)4− ligands. Complex II is a (4,4)-connected 3D novel network with ribbon-like chains formed by (o,m-bpta)4− linkers. Magnetic studies indicate an orbital contribution to the magnetic moment of I and II due to the longer Co...Co distances. An attempt has been made to fit the χM T results to the magnetic formulae for mononuclear CoII complexes, the fitting indicating the presence of weak antiferromagnetic interactions between the CoII ions.


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