Synthesis, structure, magnetism and proton conductivity of a cyanide-bridged NiIICoIII framework

Zhou, Yue; Huang, Xiang; Zhu, Jing-Yan; Shi, Le; You, Wei; Wei, Xian‐Wen; Tian, Zhengfang; Shao, Dong

doi:10.1016/j.poly.2022.116181

Cited by 12 publications

(7 citation statements)

References 36 publications

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“…For practical applications of MOFs, including proton conduction, water stability in liquid or vapor environments is critical for the ultimate application. 27…”

Section: Resultsmentioning

confidence: 99%

“…It has been widely accepted that highly hydrogen-bonded networks are essential for an efficient proton mobility pathway to achieve great proton conduction. 12,27 Considering the 1D hydrogen-bond water chains within the well-identified porous channels of 1 , proton conductivity can be potentially expected. In particular, although guest H 2 O is hosted by the porous framework, the compound is very stable at room temperature and even in high-water conditions, which greatly attracts us to investigate its room temperature conductivity behavior.…”

Section: Resultsmentioning

confidence: 99%

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A porous cobalt(ii)–organic framework exhibiting high room temperature proton conductivity and field-induced slow magnetic relaxation

et al. 2023

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“…For practical applications of MOFs, including proton conduction, water stability in liquid or vapor environments is critical for the ultimate application. 27…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

A porous cobalt(ii)–organic framework exhibiting high room temperature proton conductivity and field-induced slow magnetic relaxation

et al. 2023

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“…These interactions may significantly affect the magnetic properties of the system compared to identical single metallic units. Molecular materials can be multifunctional compounds, such as magnets, which combine magnetic ordering with chirality, conductivity and porosity, and even with two of such additional properties [ 1 , 13 , 14 , 15 , 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Structural Diversity, XAS and Magnetism of Copper(II)-Nickel(II) Heterometallic Complexes Based on the [Ni(NCS)6]4− Unit

et al. 2023

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The new heterometallic compounds, [{Cu(pn)2}2Ni(NCS)6]n·2nH2O (1), [{CuII(trien)}2Ni(NCS)6CuI(NCS)]n (2) and [Cu(tren)(NCS)]4[Ni(NCS)6] (3) (pn = 1,2-diaminopropane, trien = triethylenetetramine and tren = tris(2-aminoethylo)amine), were obtained and characterized by X-ray analysis, IR spectra, XAS and magnetic measurements. Compounds 1, 2 and 3 show the structural diversity of 2D, 1D and 0D compounds, respectively. Depending on the polyamine used, different coordination polyhedron for Cu(II) was found, i.e., distorted octahedral (1), square pyramidal (2) and trigonal bipyramidal (3), whereas coordination polyhedron for nickel(II) was always octahedral. It provides an approach for tailoring magnetic properties by proper selection of auxiliary ligands determining the topology. In 1, thiocyanate ligands form bridges between the copper and nickel ions, creating 2D layers of sql topology with weak ferromagnetic interactions. Compound 2 is a mixed-valence copper coordination polymer and shows the rare ladder topology of 1D chains decorated with [CuII(tren)]2+ antennas as the side chains attached to nickel(II). The ladder rails are formed by alternately arranged Ni(II) and Cu(I) ions connected by N2 thiocyanate anions and rungs made by N3 thiocyanate. For the Cu(I) ions, the tetrahedral thiocyanate environment mixed N/S donor atoms was found, confirming significant coordination spheres rearrangement occurring at the copper precursor together with the reduction in some Cu(II) to Cu(I). Such topology enables significant simplification of the magnetic properties modeling by assuming magnetic coupling inside {NiIICuII2} trinuclear units separated by diamagnetic [Cu(NCS)(SCN)3]3− linkers. Compound 3 shows three discrete mononuclear units connected by N-H…N and N-H…S hydrogen bonds. Analysis of XAS proves that the average ligand character and the covalency of the unoccupied metal d-based orbitals for copper(II) and nickel(II) increase in the following order: 1 ® 2 ® 3. In 1 and 2, a weak ferromagnetic coupling between copper(II) and nickel(II) was found, but in 2, additional and stronger antiferromagnetic interaction between copper(II) ions prevailed. Compound 3, as an ionic pair, shows, as expected, a spin-only magnetic moment.

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“…14,15 In addition, MOF with cyanide ligand, were developed for application using these proton conductivity. [16][17][18][19] Efforts to enhance the proton conductivity of PB have been made by creating composites of PB analogues. [20][21][22] A study by Ono et al showed that a grain-boundary-free PB nanofilm with a self-assembled monolayer exhibits high proton conductivity (approximately 0.1 S cm À1 ).…”

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confidence: 99%

“…14,15 In addition, MOF with cyanide ligand, were developed for application using these proton conductivity. 16–19…”

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confidence: 99%

Surface modification enhances the bulk proton conductivity of Prussian blue

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Synthesis, structure, magnetism and proton conductivity of a cyanide-bridged NiIICoIII framework

Cited by 12 publications

References 36 publications

A porous cobalt(ii)–organic framework exhibiting high room temperature proton conductivity and field-induced slow magnetic relaxation

A porous cobalt(ii)–organic framework exhibiting high room temperature proton conductivity and field-induced slow magnetic relaxation

Structural Diversity, XAS and Magnetism of Copper(II)-Nickel(II) Heterometallic Complexes Based on the [Ni(NCS)6]4− Unit

Surface modification enhances the bulk proton conductivity of Prussian blue

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