Magnetic ordering in dihydrated formates M(HCOO)<sub>2</sub> · 2H<sub>2</sub>O, M = Mn, Fe, Co, Ni: DC magnetization study

Келлерман, Д. Г.; Barykina, Yu. A.; Zheleznikov, K. A.; Tyutyunnik, A. P.; Красильников, В. Н.

doi:10.1002/pssb.201600107

Cited by 7 publications

(6 citation statements)

References 37 publications

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“…At 5 T, the negative magnetic susceptibility observed in weaker applied magnetic fields between T* and T N in the ZFC curve, and below T* in the FC curve, has disappeared. Similar field variation of the magnetic response has been reported for other ferrimagnetic inorganic-organic hybrid coordination frameworks, including AFe 2+ Fe 3+ (C 2 O 4 ) 3 (where A is an organic cation) [31], and the metal formate dihydrate, M 2+ (HCOO) 2 •2H 2 O [32,33]. In the latter case, the observed behaviour was understood to arise from the antiferromagnetic coupling of two ferromagnetic M 2+ sublattices.…”

Section: Figure 3csupporting

confidence: 73%

Strong magnetic exchange and frustrated ferrimagnetic order in a weberite-type inorganic–organic hybrid fluoride

Clark

Albino

Pimenta

et al. 2019

Phil. Trans. R. Soc. A.

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We combine powder neutron diffraction, magnetometry and 57 Fe Mössbauer spectrometry to determine the nuclear and magnetic structures of a strongly interacting weberite-type inorganic–organic hybrid fluoride, Fe 2 F 5 (H taz ). In this structure, Fe 2+ and Fe 3+ cations form magnetically frustrated hexagonal tungsten bronze layers of corner-sharing octahedra. Our powder neutron diffraction data reveal that, unlike its purely inorganic fluoride weberite counterparts which adopt a centrosymmetric Imma structure, the room-temperature nuclear structure of Fe 2 F 5 (H taz ) is best described by a non-centrosymmetric Ima 2 model with refined lattice parameters a = 9.1467(2) Å, b = 9.4641(2) Å and c = 7.4829(2) Å. Magnetic susceptibility and magnetization measurements reveal that strong antiferromagnetic exchange interactions prevail in Fe 2 F 5 (H taz ) leading to a magnetic ordering transition at T N = 93 K. Analysis of low-temperature powder neutron diffraction data indicates that below T N , the Fe 2+ sublattice is ferromagnetic, with a moment of 4.1(1) µ B per Fe 2+ at 2 K, but that an antiferromagnetic component of 0.6(3) µ B cants the main ferromagnetic component of Fe 3+ , which aligns antiferromagnetically to the Fe 2+ sublattice. The zero-field and in-field Mössbauer spectra give clear evidence of an excess of high-spin Fe 3+ species within the structure and a non-collinear magnetic structure. This article is part of the theme issue ‘Mineralomimesis: natural and synthetic frameworks in science and technology’.

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Section: Figure 3csupporting

confidence: 73%

Strong magnetic exchange and frustrated ferrimagnetic order in a weberite-type inorganic–organic hybrid fluoride

Clark

Albino

Pimenta

et al. 2019

Phil. Trans. R. Soc. A.

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“…Despite the relative scarcity of studies that probe the magnetic interactions of MOFs microscopically neutron scattering studies of materials that we would now recognise as magnetic 29 Powder neutron diffraction measurements on deuterated samples revealed antiferromagnetic coupling between A-site cations within a plane in all four materials (see Fig. 1).…”

Section: Early Neutron Scattering Studies Of Magnetic Mofsmentioning

confidence: 98%

Probing magnetic interactions in metal–organic frameworks and coordination polymers microscopically

Saines

Bristowe

2018

Dalton Trans.

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Materials with magnetic interactions between their metal centres play a tremendous role in modern technologies and can exhibit unique physical phenomena. In recent years, magnetic metal-organic frameworks and coordination polymers have attracted significant attention because their unique structural flexibility enables them to exhibit multifunctional magnetic properties or unique magnetic states not found in the conventional magnetic materials, such as metal oxides. Techniques that enable the magnetic interactions in these materials to be probed at the atomic scale, long established to be key for developing other magnetic materials, are not well established for studying metal-organic frameworks and coordination polymers. This review focuses on studies where metal-organic frameworks and coordination polymers have been examined using such microscopic probes, with a particular focus on neutron scattering and density-functional theory, the most-well established experimental and computational techniques for understanding magnetic materials in detail. This paper builds on a brief introduction to these techniques to describe how such probes have been applied to a variety of magnetic materials starting with select historical examples before discussing multifunctional, low dimensional and frustrated magnets. This review highlights the information that can be obtained from such microscopic studies, including the strengths and limitations of these techniques. The article then concludes with a brief perspective on the future of this area.

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“…Table 1 Comparison of bond lengths (Å ) in the current and the previous refinement of Ni(HCOO) 2 Á2H 2 O (a,b) . Krogmann & Mattes (1963); lattice parameters a = 8.60 (1), b = 7.06 (1), c = 9.21 (2) Å , = 96.50 (10) from single-crystal data at room temperature; (b) lattice parameters a = 8.5951 (1), b = 7.0688 (5), c = 9.2152 (2) Å , = 97.41 (1) from Rietveld profile refinement at room temperature (Kellerman et al, 2016). Table 2 Hydrogen-bond geometry (Å , ).…”

Section: Data Reportsmentioning

confidence: 99%

“…In the course of these studies it became apparent that a redetermination of the crystal structure of nickel formate dihydrate, Ni(HCOO) 2 Á2H 2 O, (Krogmann & Mattes, 1963) was desirable in terms of higher precision and accuracy and for an unambiguous assignment of the hydrogen-bonding scheme. Although a profile refinement using the Rietveld method has been performed on this material, leading to precise room-temperature lattice parameters (Kellerman et al, 2016), improved structural data are still missing.…”

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confidence: 99%

Redetermination of nickel(II) formate dihydrate

Weil

2018

IUCr Data

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In comparison with the previous structure determination of poly[diaquadi-μ-formato-nickel(II)], [Ni(HCOO)2(H2O)2]n, based on Weissenberg film data [Krogmann & Mattes (1963).Z. Kristallogr.118, 291–302], the current redetermination from modern CCD data revealed the positions of the H atoms, thus making a detailed description of the hydrogen-bonding pattern possible. Both Ni2+cations in the crystal structure are located on inversion centres and are octahedrally coordinated. One Ni2+cation is bound to six O atoms of six formate anions whereas the other Ni2+cation is bound to four O atoms of water molecules and to two formate O atoms. In this way, the formate anions bridge the two types of Ni2+cations into a three-dimensional framework. O—H...O hydrogen bonds of medium strength between water molecules and formate O atoms consolidate the packing.

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Magnetic ordering in dihydrated formates M(HCOO)₂ · 2H₂O, M = Mn, Fe, Co, Ni: DC magnetization study

Abstract: The magnetic properties of hydrated formates M(HCOO) 2 Á 2H 2 O (M ¼ Mn, Fe, Co, Ni) have been investigated in a wide range of fields and temperatures, which made it possible to detect and describe previously unknown details.

Cited by 7 publications

References 37 publications

Strong magnetic exchange and frustrated ferrimagnetic order in a weberite-type inorganic–organic hybrid fluoride

Strong magnetic exchange and frustrated ferrimagnetic order in a weberite-type inorganic–organic hybrid fluoride

Probing magnetic interactions in metal–organic frameworks and coordination polymers microscopically

Redetermination of nickel(II) formate dihydrate

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Magnetic ordering in dihydrated formates M(HCOO)2 · 2H2O, M = Mn, Fe, Co, Ni: DC magnetization study

Abstract: The magnetic properties of hydrated formates M(HCOO) 2 Á 2H 2 O (M ¼ Mn, Fe, Co, Ni) have been investigated in a wide range of fields and temperatures, which made it possible to detect and describe previously unknown details.

Cited by 7 publications

References 37 publications

Strong magnetic exchange and frustrated ferrimagnetic order in a weberite-type inorganic–organic hybrid fluoride

Strong magnetic exchange and frustrated ferrimagnetic order in a weberite-type inorganic–organic hybrid fluoride

Probing magnetic interactions in metal–organic frameworks and coordination polymers microscopically

Redetermination of nickel(II) formate dihydrate

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Product

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Magnetic ordering in dihydrated formates M(HCOO)₂ · 2H₂O, M = Mn, Fe, Co, Ni: DC magnetization study