The use of a semi-flexible bipyrimidyl ligand for the construction of azide-based coordination polymers: structural diversities and magnetic properties

Zhang, Zu-Zhen; Lee, Gene‐Hsiang

doi:10.1039/c8dt03928c

Cited by 20 publications

(9 citation statements)

References 107 publications

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“…It is also larger than the spin-only value of 3.74 cm 3 K/mol for the two uncoupled Co 2+ centers with S = 3/2 and g = 2, indicating strong spin-orbital coupling interactions. The χMT values drop significantly to 0.89 cm 3 K/mol at 25 K and then show a spike feature at 5 K, which is normal for antiferromagnetically coupled Co II ions and probably indicates a spin canting phenomenon [20]. However, our attempt to analyze the magnetic properties of 2 by following Rueff's phenomenological approach afforded no acceptable results.…”

Section: Magnetic Properties Of 1 Andmentioning

confidence: 81%

A Pair of CoII Supramolecular Isomers Based on Flexible Bis-Pyridyl-Bis-Amide and Angular Dicarboxylate Ligands

Chhetri

Hsieh

et al. 2020

Molecules

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Thermal reactions of cobalt(II) salts with flexible N,N′-bis(pyrid-3-ylmethyl)adipoamide (L) and angular 4,4′-sulfonyldibenzoic acid (H2SDA) in H2O and CH3OH afforded a pair of supramolecular isomers: [Co2(L)(SDA)2], 1, and [Co2(L)(SDA)2]⋅CH3OH⋅H2O, 2. The structure of complex 1 can be simplified as a one-dimensional (1D) looped chain with L ligands penetrating into the middles of squares, forming a new type of self-catenated net with the (42⋅54)(4)2(5)2 topology, whereas complex 2 displays a 2-fold interpenetrated 2D net with the rare (42⋅68⋅8⋅104)(4)2-2,6L1 topology. While both complexes 1 and 2 display antiferromagnetism with strong spin-orbital coupling, the antiferromagnetism of 2 is accompanied by a cross-over behavior and probably a spin canting phenomenon.

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Section: Magnetic Properties Of 1 Andmentioning

confidence: 81%

A Pair of CoII Supramolecular Isomers Based on Flexible Bis-Pyridyl-Bis-Amide and Angular Dicarboxylate Ligands

Chhetri

Hsieh

et al. 2020

Molecules

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“…The plot of T vs. 1/χ M exhibits the linear relationship between 50 and 300 K and adheres to the law of Curie-Weiss, and the Curie constant of C and Weiss constant of θ is 2.86 cm 3 •mol -1 •K and −2.67 K, respectively. For the Weiss constant, its negative value in-depth proves that between the Co(II) ions, there is an antiferromagnetic interaction [21][22][23].…”

Section: Magnetic Property Ofmentioning

confidence: 98%

Magnetic Property and Therapeutic Effect of a New Co(II) Complex on Liver Cancer by Regulating the Expression of miRNA31

Guo

Zhen

Yao

et al. 2021

International Journal of Polymer Science

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Employing the flexible hexacarboxylate ligand of 1,3,5-triazine-2,4,6-triamine hexaacetic acid (H6TTHA) to assemble with Co(NO3)2·6H2O, we have acquired a novel coordination compound, i.e., [Co2(H2TTHA)(H2O)]n·6n(H2O) (1). The analysis of single X-ray diffraction indicated that the H2TTHA2- ligand μ5-bridges connected the Co(II) ions into a two-dimensional layered architecture. Moreover, the magnetic property of 1 was also investigated between 2 and 300 K under 1000 Oe applied magnetic field. The novel compound’s inhibitory activity against the viability of cancer cell was determined through CCK-8 assay, and the expression of miRNA31 in liver cancer cells was detected via the real-time RT-PCR.

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“…A few 2D MOFs have been reported to have ferromagnetic ordering and spin canting well below room temperatures. − On the contrary, ferromagnetic behavior including ferromagnetic ordering, spin-canting, and spin-glass like behavior has been observed only in a few 2D MOFs. ,− A few reports discussed the presence of ferrimagnetism in 2D MOFs. − …”

Section: Properties and Applicationsmentioning

confidence: 99%

“…This coupling is weak enough by the moderate field 2.7 T at 2 K to provide a metamagnetic spin-flop transition with a small hysteresis (0.2 T) . Two more MOFs with azide ligands also show metamagnetism below 10 K . In some cases, the metamagnetic behavior is also modulated by solvent and further accompanied by magnetic relaxation ,, and spin canting. − …”

Section: Properties and Applicationsmentioning

confidence: 99%

Two-Dimensional Metal-Organic Framework Materials: Synthesis, Structures, Properties and Applications

et al. 2021

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Among the recent developments in metal-organic frameworks (MOFs), porous layered coordination polymers (CPs) have garnered attention due to their modular nature and tunable structures. These factors enable a number of properties and applications, including gas and guest sorption, storage and separation of gases and small molecules, catalysis, luminescence, sensing, magnetism, and energy storage and conversion. Among MOFs, two-dimensional (2D) compounds are also known as 2D CPs or 2D MOFs. Since the discovery of graphene in 2004, 2D materials have also been widely studied. Several 2D MOFs are suitable for exfoliation as ultrathin nanosheets similar to graphene and other 2D materials, making these layered structures useful and unique for various technological applications. Furthermore, these layered structures have fascinating topological networks and entanglements. This review provides an overview of different aspects of 2D MOF layered architectures such as topology, interpenetration, structural transformations, properties, and applications.

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The use of a semi-flexible bipyrimidyl ligand for the construction of azide-based coordination polymers: structural diversities and magnetic properties

Abstract: The use of a semi-flexible bipyrimidyl ligand, 5,5′-bipyrimidine, afforded four new 2D and 3D azide-based coordination polymers with diverse structures and magnetic properties.

Cited by 20 publications

References 107 publications

A Pair of CoII Supramolecular Isomers Based on Flexible Bis-Pyridyl-Bis-Amide and Angular Dicarboxylate Ligands

A Pair of CoII Supramolecular Isomers Based on Flexible Bis-Pyridyl-Bis-Amide and Angular Dicarboxylate Ligands

Magnetic Property and Therapeutic Effect of a New Co(II) Complex on Liver Cancer by Regulating the Expression of miRNA31

Two-Dimensional Metal-Organic Framework Materials: Synthesis, Structures, Properties and Applications

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