Electrochemical, Electrocatalytic, and Magnetic Properties of Vanadium-Containing Polyoxometalates

Mono-substituted vanadium-containing Dawson-type polyoxometalates having the general formula α1-[VIVW17X2O62]8− and α2-[VIVW17X2O62]8−, with X = As or P, were synthesised and subject to a comprehensive electrochemical study comprising the pH dependency. These POMs exhibit an electrocatalytic behaviour towards the oxidation of thiols (namely cysteine), rendering them interesting species for mimicking oxidative stress situations, at physiological pH values. The efficiency of the electro-oxidation was assessed with thiols of different nature, and the substrate that responded best was used to compare the electrocatalytic capabilities of the POM series. The magnetic behaviour of these POMs was also evaluated and compared to their analogues, α1- and α2-[VVW17X2O62]7− (X = As or P), at low temperatures and showed, as expected, a paramagnetic behaviour of VIV based compounds.

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Magnetische Eigenschaften der Normaltemperaturform von CsTmO2 / Magnetic Properties of the Normal-Temperature Form of CsTmO2

Zeitschrift für Naturforschung A ◽

10.1515/zna-1979-0813 ◽

1979 ◽

Vol 34 (8) ◽

pp. 997-1002 ◽

Cited By ~ 5

Author(s):

Werner Urland

Keyword(s):

Magnetic Properties ◽

Magnetic Anisotropy ◽

Crystal Field ◽

Ground State ◽

Low Temperatures ◽

Magnetic Behaviour ◽

Magnetic Data ◽

Angular Overlap Model ◽

Temperature Form ◽

Overlap Model

AbstractThe magnetic behaviour of the normal-temperature-form of CsTmO2 (NT-CsTmO2) has been studied in the temperature range between 2.9 and 251.3 K. In order to interpret the magnetic data a method applying the angular overlap model has been established to assess the crystal-field (CF) parameters of NT-CsTmO2 (CF symmetry: D3d) from the known CF parameters for Tm3+ substituted in YVO4 (CF symmetry: D2d)-With these CF parameters the observed magnetic properties of NT-CsTmO2 can be satisfactorily simulated. The calculation of the paramagnetic principal susceptibilities yields a high magnetic anisotropy, especially at low temperatures. The energy values of the CF levels of the 3H6 ground state are calculated.

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On the influence of low temperatures on the magnetic properties of alloys of iron with nickel and manganese

Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character ◽

10.1098/rspa.1921.0033 ◽

1921 ◽

Vol 99 (698) ◽

pp. 174-196 ◽

Cited By ~ 1

Keyword(s):

Magnetic Properties ◽

Low Temperatures ◽

Mechanical Treatment ◽

Magnetic Behaviour ◽

Manganese Steel ◽

Manganese Alloy ◽

Steel Alloys ◽

The Subject ◽

Iron Manganese ◽

Insight Into

Since its discovery by one of us in 1883, the material now universally known as manganese steel, that is the iron-manganese alloy containing about 12 to 14 per cent. manganese and 1⋅10 to 1⋅25 per cent. carbon has, on account of its many remarkable properties, been the subject of many researches. 2. The investigation of its magnetic behaviour in connection with thermal and mechanical treatment has taken a prominent place among them, as this method of investigation, perhaps more than any other, promised to give an insight into the constitution of steel alloys, and accordingly to show how their properties might be influenced in any desired direction. Manganese steel has not only been important in itself, but by reason of the light it has thrown upon the laws relating generally to steel alloys.

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Magnetic properties of some copper(II) complexes of benzimidazolylalkanols

Australian Journal of Chemistry ◽

10.1071/ch9730997 ◽

1973 ◽

Vol 26 (5) ◽

pp. 997 ◽

Cited By ~ 3

Author(s):

GJ Hamilton ◽

E Kokot

Keyword(s):

Magnetic Properties ◽

Magnetic Susceptibility ◽

General Formula ◽

Magnetic Behaviour ◽

Methyl Group ◽

Temperature Range

The magnetic susceptibility in the temperature range 80-400 K is reported for copper(II) complexes of the general formula CuLX, where L is benzimidazole substituted in the 2-position by α- or β-hydroxyalkyl groups and in some cases also in the N-position by a methyl group and X is Br-, Cl-, or acetate. The magnetic behaviour of 1-(benzimidazol-2- yl)alkanolato complexes is interpreted in terms of antiferro- magnetically exchange-coupled pairs of copper atoms. The 2- (benzimidazol-2-yl)-alkanolato complex is a linear antiferromagnet.

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New insights into the comprehension of the magnetic properties of dinuclear MnIII compounds with the general formula [{MnL(NN)}2(μ-O)(μ-n-RC6H4COO)2]X2

Dalton Transactions ◽

10.1039/c6dt01097k ◽

2016 ◽

Vol 45 (29) ◽

pp. 11753-11764 ◽

Cited By ~ 3

Author(s):

Luis Escriche-Tur ◽

Mercè Font-Bardia ◽

Belén Albela ◽

Montserrat Corbella

Keyword(s):

Magnetic Properties ◽

General Formula ◽

Structural Parameters ◽

Magnetic Behaviour ◽

Local Anisotropy ◽

Bridging Ligands

The effect of the local anisotropy and the structural parameters, modulated by the benzoate bridging ligands, on the magnetic behaviour is reported.

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The Structure and Magnetic Properties of the Two-Dimensional Di-Pyrazine Bridged Polymers M(pz)2Br2 (M = FeII, CoII, NiII)

Australian Journal of Chemistry ◽

10.1071/ch01094 ◽

2002 ◽

Vol 55 (3) ◽

pp. 219 ◽

Cited By ~ 11

Author(s):

M. James

Keyword(s):

Magnetic Properties ◽

Low Temperatures ◽

Relative Importance ◽

Two Dimensional ◽

Neutron Diffraction Data ◽

Magnetic Exchange ◽

Magnetic Susceptibility Data ◽

Susceptibility Data ◽

Polymeric Compounds ◽

Paramagnetic Behaviour

The polymeric compounds M(pyrazine)2Br2 [M = Fe (1), Co (2), and Ni (3)] have been synthesized by the addition of a solution of pyrazine in methanol to a methanolic solution of the anhydrous metal bromide. The crystal structures of (1)-(3) were determined using powder synchrotron and neutron diffraction data and were found to be isostructural. The structures consist of pseudo-octahedral units, doubly linked by pyrazine ligands to form two-dimensional sheets. Magnetic susceptibility data were recorded for each complex down to 5 K and reveal paramagnetic behaviour at high temperatures and antiferromagnetic interactions at low temperatures. Comparison of the structures and magnetism of these and other M(pz)2X2 compounds highlight the relative importance of the canting of the pyrazine ligands on the strength of the magnetic exchange.

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Specific features of thermal and magnetic properties of YbB50 at low temperatures

Physical Review Materials ◽

10.1103/physrevmaterials.2.054401 ◽

2018 ◽

Vol 2 (5) ◽

Cited By ~ 1

Author(s):

V. V. Novikov ◽

N. A. Zhemoedov ◽

A. V. Matovnikov ◽

N. V. Mitroshenkov ◽

E. A. Popova ◽

...

Keyword(s):

Magnetic Properties ◽

Low Temperatures

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Effect of coverage on the magnetic properties of -COOH, -SH, and -NH2 ligand-protected cobalt nanoparticles

Nanoscale ◽

10.1039/d1nr01081f ◽

2021 ◽

Author(s):

Barbara Farkas ◽

Nora Henriette De Leeuw

Keyword(s):

Magnetic Properties ◽

Magnetic Nanoparticles ◽

Cobalt Nanoparticles ◽

Magnetic Behaviour

Implementation of magnetic nanoparticles in biomedicine requires their passivation, which often comes at a cost of diminished magnetic properties. For the design of nano-agents with targeted magnetic behaviour, it is...

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