Magnetic properties of low-symmetry d2 octahedral complexes. Synthesis and magnetic susceptibilities of some six-corrdinate tungsten(IV) halide complexes

1973 ◽  
Vol 12 (9) ◽  
pp. 1972-1979 ◽  
Author(s):  
Margaret A. Schaefer King ◽  
R E. McCarley
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibilities ◽  
Halide Complexes ◽  
Low Symmetry

The Ground State in Cs2KFe(CN)6 From Single-Crystal Magnetic Properties

1992 ◽  
Vol 45 (8) ◽  
pp. 1301 ◽  
Author(s):  
PA Reynolds ◽  
CD Delfs ◽  
BN Figgis ◽  
B Moubaraki ◽  
KS Murray
Keyword(s):  
Magnetic Properties ◽  
Single Crystal ◽  
Crystal Field ◽  
Ground State ◽  
Field Model ◽  
Inversion Symmetry ◽  
Variable Parameters ◽  
Magnetic Susceptibilities ◽  
Effective Reduction ◽  
Low Symmetry

The single-crystal magnetic susceptibilities from 4.5 to 300 K, and the magnetizations at 4.5 K from 0.25 to 5 T, of Cs2KFe(CN)6 along a, b and c* are reported. The data are fitted well by a crystal field model with splitting of the ground-state 2T2g term of the hexacyanoferrate (III) ion. The three variable parameters of the model were the two representing the low-symmetry splitting of the t2g orbitals, and the effective reduction in the orbital angular momentum. Four other parameters were fixed at values known or estimated from other experiments on hexacyanoferrate (III) ions, including polarized neutron diffraction which determines the orientation of lower-symmetry crystal field components. The crystal field has only inversion symmetry with respect to the ligand axes, with a non-cubic component which is almost uniaxial with respect to the a,b,c * axis system.

Magnetic Properties of S = 1/2 Distorted Kagome Antiferromagnet CdCu3(OH)6Cl2 with Low-Symmetry Orbital Arrangement

2021 ◽  
Vol 90 (4) ◽  
pp. 044714
Author(s):  
Hiroyuki K. Yoshida ◽  
Naoya Noguchi ◽  
Yuto Ishii ◽  
Migaku Oda ◽  
Jie Chen ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Low Symmetry

The magnetic properties of some complexes of higher-valent manganese

1967 ◽  
Vol 20 (4) ◽  
pp. 629 ◽  
Author(s):  
HA Goodwin ◽  
RN Sylva
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibilities ◽  
Temperature Range

The magnetic susceptibilities of the compounds [bipy-H2][MnCl5], [phen- H2]-[MnCl5], [MnCl3(H2O)bipy], [MnCl3(H2O)phen], [MnF3(H2O)phen], [MnCl3 trpy], [MnCl4 bipy], [MnCl3 bipy], [MnCl3 phen], and [MnO phen2](ClO4)2,0.5H2O have been determined over the temperature range c. 100-300�K. All compounds appeared to follow a Curie-Weiss law. The Curie-Weiss θ values indicate that the first seven compounds are simple paramagnetics, while the last three are antiferromagnetics. The antiferromagnetic behaviour of these compounds indicates that they have bridged structures.

Studies of metal halides. Magnetic properties of some molybdenum(III) binuclear complex halides

1969 ◽  
Vol 22 (1) ◽  
pp. 121 ◽  
Author(s):  
IE Grey ◽  
PW Smith
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Binuclear Complex ◽  
Magnetic Behaviour ◽  
Metal Halides ◽  
Metal Interaction ◽  
Metal Metal ◽  
Halide Complexes

The variation of magnetic susceptibility with temperature for a number of binuclear halide complexes of molybdenum of formula A3IMo2X9 (A = Cs, Et4N, Et3NH; X = Cl, Br) has been studied over the range 90-400�K. The magnetic behaviour is consistent with that expected for magnetically isolated exchange-coupled pairs of molybdenum atoms. The coupling is interpreted as occurring mainly by direct metal-metal interaction rather than superexchange.

Synthesis and magnetic properties of polymeric complexes containing ruthenium(II)-ruthenium(III) tetracarboxylato units linked by cyanato, thiocyanato, and selenocyanato ligands

2008 ◽  
Vol 62 (4) ◽  
Author(s):  
Makoto Handa ◽  
Hideaki Ishida ◽  
Kayoko Ito ◽  
Toshihiro Adachi ◽  
Takahisa Ikeue ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
1H Nmr ◽  
Nmr Spectra ◽  
Diffuse Reflectance ◽  
Magnetic Susceptibilities ◽  
Diffuse Reflectance Spectra ◽  
Main Species ◽  
Elemental Analyses ◽  
Polymeric Species ◽  
Polymeric Complexes

AbstractPolymeric complexes of ruthenium(II)-ruthenium(III) tetracarboxylato units linked by cyanato, thiocyanato, and selenocyanato ligands [Ru2{O2C(CH2)mCH3}4(L)]n (m = 0, 4–7; L = OCN−, SCN−, and SeCN−) were prepared and characterized based on the elemental analyses, IR, and diffuse reflectance spectra. Magnetic susceptibilities were measured at the temperature range of 4.5 K to 300 K, where the interdimer antiferromagnetic interactions were revealed. The strongest interaction was exhibited in case of m = 7 and L = OCN−. 1H-NMR spectra of [Ru{O2C(CH2)7CH3}4(SCN)]n in CD2Cl2 showed broad signals which can be ascribed to polymeric species, as the addition of tetrabutylammonium thiocyanate caused sharper signals due to the formation of [Ru2{O2C(CH2)7CH3}4(SCN)2]− adduct as the main species in the solution.

Nd7,33Ta8O28CI6 — ein Zwischenprodukt des thermischen Abbaus von Nd2Ta2O7Cl2: Präparation, Struktur und magnetische Eigenschaften / Nd7,33Ta8O28Cl6 — an Intermediate Product of the Thermal Decomposition of Nd2Ta2O7Cl2: Preparation, Crystal Structure and Magnetic Properties

1988 ◽  
Vol 43 (12) ◽  
pp. 1567-1574 ◽  
Author(s):  
U. Schaffrath ◽  
R. Gruehn
Keyword(s):  
Crystal Structure ◽  
Thermal Decomposition ◽  
Magnetic Properties ◽  
Calculated Data ◽  
Chemical Transport ◽  
Structure Type ◽  
Magnetic Susceptibilities ◽  
Relationship Of ◽  
The Relationship ◽  
Preparative Route

Abstract Single crystals of the new oxochlorotantalate Nd7.33Ta8O28Cl6, could be obtained only by chemical transport reactions (T2 → T1; T2 - 1000 °C, T, = 900 °C) with mixtures of Cl2/TaCl5 as transport agent. NdTaO4 was chosen as the starting material. A direct preparative route to Nd7.33Ta8O28Cl6 from binary and ternary components, however, was not successful. Nd7.33Ta8O28Cl6 , crystallizes in the space group Cmmm with a = 10.3381(8) Å, b = 18.865(1) Å, c - 3.9152(3) A; Z = 1. The structure was refined to R - 4.42%, R w = 2.76%. Main building units are pairs of edge-sharing TaO6 -octahedra which are connected with threefold capped trigonal prisms around Nd. Especially remarkable is one Nd position with an occupation factor of 0.833. The relationship of this new structure type with Nd2Ta2O7Cl2 is considered. Furthermore, we have measured the magnetic susceptibilities of both Nd-compounds in a temperature range from 3,6 to 251,3 K. The results are compared with calculated data.

scholarly journals Magnetic Susceptibility of Soils from Eastern Botswana: A Reconnaissance Survey and Potential Applications

2015 ◽  
Vol 7 (4) ◽  
pp. 45 ◽  
Author(s):  
Rubeni Tawanda Ranganai ◽  
Moikwathai Moidaki ◽  
James G. King
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Land Use Planning ◽  
Magnetic Measurements ◽  
Parent Material ◽  
Appreciable Amount ◽  
Frequency Dependent ◽  
Magnetic Susceptibilities ◽  
Basement Rocks ◽  
Rock And Soil

<p class="zhengwen">Soil magnetic properties measurements are relatively fast and inexpensive but have been proved to be sufficient for preliminary investigations in diverse socio-developmental issues. This paper presents results of a reconnaissance study of soil colour and magnetic susceptibility (c) in eastern Botswana, where ~80% of the population resides. The work is a first step to creating a database of rock and soil magnetic properties and to document spatial variations in magnetic properties in the country. These measurements are important as constraints for interpretation of available aeromagnetic data and can also be exploited for environmental soil research (pollution) and land-use planning (agriculture). The soils sampled include derivatives of varying types and provenance such as Archean gneissic granitoids, metamorphosed rocks (granulites), volcano-sedimentary assemblages, Karoo basalts, and alluvial sediments. A soil colour chart was used since soil colours and magnetic properties are diagnostic of its parent rock sources and weathering profiles. Soil magnetic susceptibilities were measured at both low frequency (0.46 MHz, clf) and high frequency (4.6 MHz, chf), thus allowing calculation of frequency-dependent susceptibility (cfd, cfd%) for detecting ultra-fine ferromagnetic minerals.</p>It was found that soils with Hues ranging from 7.5YR to 10YR have appreciable amount of magnetic materials and soils with Hues of 2.5YR are generally nonmagnetic. The results of soil magnetic susceptibility profiles show spatial variation closely related to the variation in basement rocks, which provides excellent evidence that the magnetic susceptibility variation reflects basement rocks or bedrock composition (soil parent material). In relation to the Botswana physiographic units, soils from the hardveld (Precambrian) show the highest susceptibilities, followed by those from the sandveld, with the lowest values being from the alluvial. The frequency dependent magnetic susceptibilities indicate the presence of ultra-fine super-paramagnetic minerals such as magnetite/maghemite. It is suggested that a systematic and continuous programme of rock and soil magnetic measurements would benefit various socio-economic and development priority sectors of Botswana. This also applies to many developing countries in Africa where soil physics and measurement of soil susceptibility in particular, is generally still at an embryonic stage.

The Structure, Spectra, and Magnetic Properties of Certain Iron Halide Complexes

1963 ◽  
Vol 2 (4) ◽  
pp. 817-822 ◽  
Author(s):  
A. P. Ginsberg ◽  
M. B. Robin
Keyword(s):  
Magnetic Properties ◽  
Halide Complexes
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