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Sunday, November 22, 2020 | History

2 edition of EPR studies of monoclinic thulium salts. found in the catalog.

EPR studies of monoclinic thulium salts.

Ivan Eugene Rouse

EPR studies of monoclinic thulium salts.

  • 131 Want to read
  • 17 Currently reading

Published .
Written in English

    Subjects:
  • Electron paramagnetic resonance.,
  • Salts.

  • The Physical Object
    Paginationx, 105 l.
    Number of Pages105
    ID Numbers
    Open LibraryOL16754703M

    Moreover, indirectly optical bands of EPR-silent defects can also be labelled in this way, strongly widening the scope of EPR based defect studies. We apply this method to the infrared-sensitive photorefractive system BaTiO 3:Rh, where illumination leads to recharging among the valence states Rh 5+, Rh 4+ and Rh 3+. @article{osti_, title = {Thermal energy storage using sodium sulfate decahydrate and water}, author = {Biswas, D R}, abstractNote = {It appears that the major problem preventing use of sodium sulfate decahydrate for thermal energy storage can be avoided by using the composition which is at or slightly to the water-rich side of the invariant point in the phase . A study of some nonstoichiometric rare-earth oxides Albert Eugene Miller Iowa State University Follow this and additional works at: Part of theMetallurgy Commons This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State UniversityCited by: 1. @article{osti_, title = {Mixed sodium nickel-manganese sulfates: Crystal structure relationships between hydrates and anhydrous salts}, author = {Marinova, Delyana M. and Zhecheva, Ekaterina N. and Kukeva, Rositsa R. and Markov, Pavel V. and Nihtianova, Diana D. and Institute of Mineralogy and Crystallography, Bulgarian Academy of Sciences, Sofia .

    Using powder XRD, electron paramagnetic resonance spectroscopy (EPR), IR and Raman spectroscopy it has been found that double sodium-nickel and sodium-manganese salts form solid solutions Na{sub 2}Ni{sub 1−x}Mn{sub x}(SO{sub 4}){sub 2}4H{sub 2}O with a blödite-type of structure within a broad concentration range of 0≤x≤, while the.


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EPR studies of monoclinic thulium salts. by Ivan Eugene Rouse Download PDF EPUB FB2

Not Available adshelp[at] The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86AAuthor: Ivan Eugene Rouse. An electron paramagnetic resonance (EPR) study of a synthetic single crystal of LiScGeO4 doped with Cr ions carried out earlier at the X- and Q-bands at.

An EPR study has been carried out on Mn2+-doped single crystals of hexaquonitrates of Mg and Ni, Mg(OH2)6.(NO3)2 and Ni(OH2)6.(NO3)2, at room temperature (approximately K) and at.

EPR Studies of Monoclinic Thulium-Salts,Washington State University, Department of Physics, Pullman, Washington () a thesis submitted in partial fulfillment of the requirements for the Ph.D.

degreeCited by: 5. EPR studies The existence of Cu(II) centers in the compound is also supported by the EPR data.

The room temperature X-band EPR spectrum of the powdered sample of monoclinic {Cu[Hg(SCN) 4 ]} n (Fig. 11) reveals an axial signal with anisotropic g Cited by: 9.

The study of point defects, other than impurities, in insulators by electron paramagnetic resonance (E.P.R.) and electron nuclear double resonance (E.N.D.O.R.) is discussed.

The EPR study of γ-irradiated [TMAHF–FA] single crystal has indicated the existence of C ˙ α H α C β H β COO-radical and spectra recorded in the three mutually perpendicular planes have shown two magnetically distinct paramagnetic sites in monoclinic lattice.

The IR study of compound has shown the absorption bands consistent with the literature. by: 7. EPR study of Fe3+- and Ni2+-doped macroporous CaSiO3 ceramics Article in Applied Magnetic Resonance 33(1) March with 40 Reads How we measure 'reads'.

EPR spectra of Cr3+ ions doped in kainite single crystals were recorded at room temperature at X-band frequencies with kHz field modulation. The pr Cited by: 9. Metal-containing ionic liquids (ILs) are of interest for a variety of technical applications, e.g., particle synthesis and materials with magnetic or thermochromic properties.

In this paper we report the synthesis of, and two structures for, some new tetrabromidocuprates(II) with several “onium” cations in comparison to the results of electron paramagnetic resonance (EPR) Cited by: 5.

Magnetic properties and high-field EPR spectra of three previously unknown tetranuclear quinoline adducts of copper(II) trifluoroacetate were studied, and their X-ray structures were determined. Two green complexes containing a μ4-oxo bridge, Cu4O(CF3COO)6(quin)4(C6H5CH3) (orthorhombic, Pbca, a = (3), b = (5), c = (7) Å) and Cu4O(CF3COO)6(quin)4(C6H6) (monoclinic Cited by: EPR studies of this radical in 17 O-labeled KHCO 3 crystal showed that the unpaired spin density is primarily distributed in two in-plane p-orbitals of the two equivalent oxygen atoms as it is shown by the black point in Fig.

by: 2. An EPR study with optical detection is reported of the luminescent triplet state of the VO3−4 ion in single crystals of YVO4 and YPO4 doped with VO3−4.

Filling the gap for a systematic, authoritative, and up-to-date review of this cutting-edge technique, this book covers both low and high frequency EPR, emphasizing the importance of adopting the multifrequency approach to study paramagnetic systems in full detail by using the EPR method.

In EPR studies of monoclinic thulium salts. book doing, it discusses not only the underlying theory. Phys. Chem. All Publications/Website. OR SEARCH CITATIONS. Dark crystals, obtained when a layer of hexane was allowed to slowly diffuse into a CH 2 Cl 2 solution of triiodide salt, crystallize in monoclinic space group P2 1 /n.

The observations of the structural characteristics of 1‘,1‘ ‘‘-dinaphthylmethylbiferrocenium triiodide are also consistent with our Mössbauer studies. The compounds [1,4′-bipyridine]-1,1′-diium [CuCl4] (1) and [1,4′-bipyridine]-1,1′-diium [CuBr4] (2) were prepared and their crystal structures and magnetic properties are reported.

The compounds are isomorphous and crystallize in the monoclinic space group C2/c. The cation crystallizes in a two-fold disordered fashion with the terminal nitrogen and carbon atoms exhibiting 50% Author: Jeffrey C. Monroe, Christopher P. Landee, Melanie Rademeyer, Mark M.

Turnbull. Electron Paramagnetic Resonance and crystallographic studies on copper-doped cadmium creatininium sulfate (CdCrnS) were undertaken to study the characteristics of a copper-hexahydrate complex in an organic analog of Tutton’s salt.

X-ray diffraction experiments determined the crystal structure of CdCrnS at both K and K. CdCrnS, like Tutton salt, crystallizes in the monoclinic Author: Michael J Colaneri, Simon J.

Teat, Jacqueline Vitali. Synthetic efforts targeting soluble species of Co(II) with the low molecular mass physiological ligand citric acid led to the isolation of the first dinuclear complex [Co2(C6H5O7)2(H2O)4]2- at pH ∼5, in the form of its K+ (1) and Na+ (2) salts.

Both 1 and 2 were characterized analytically, spectroscopically (FT-IR, UV/visible, EPR), and by: Chapter 1 In situ electron paramagnetic resonance (EPR) – a unique tool for analysing structure and reaction behaviour of paramagnetic sites in model and real catalysts.

Thomas Risse, a Dirk Hollmann b and Angelika Brückner* b a Institut für Chemie und Biochemie, Freie Universität Berlin, Berlin,Germany. b Leibniz-Institut für Katalyse e. an der Universität Rostock, Cited by: 7.

Compound 2 crystallises in the monoclinic space group P21/c. The asymmetric unit consists of half a [{Mn(bpy) 2} 2 (μMeOC 6 H 4 COO) 2] 2+ complex and a ClO 4 − anion. The other half of the complex is generated by an inversion centre.

A total of parameters were refined in the final cycle of refinement on F 2 without using any restraint. The influence of calcination temperature on copper spatial localization in Y-stabilized ZrO2 powders was studied by attenuated total reflection, diffuse reflectance, electron paramagnetic resonance, transmission electron microscopy, electron energy loss, and energy-dispersive X-ray spectroscopies.

It was found that calcination temperature rise in the range of Cited by: 4. The synthesis and magnetic data of four copper(II) complexes obtained from squaric acid and bipyridyl or imidazole as ligand are described. Cu(C 4 O 4)(imidazole) 2 •2H 2 O (compound I) is made of chains of squarato-1,3-bridged Cu(II) compound crystallizes in the monoclinic system, space group P2 1 /n, and lattice parameters a = (2) Å, b = (2) Å, c = Cited by: A newly prepared Cu(II) complex salt, Cu(L1)(H2O)2Br2, where L1 is 3,dimethyl-2,6,13,tetraazatricyclo(,12) docosane, is characterized by elemental and crystallographic analyses.

The Cu(II) center is coordinated by four nitrogen atoms of macrocyclic ligand and the axial position by two water molecules. The macrocyclic ligand adopts an optimally stable trans Author: Sunghwan Jeon, Ján Moncol, Milan Mazúr, Marián Valko, Jong-Ha Choi.

In this paper, we combine synchrotron powder x-ray diffraction, 7 Li nuclear magnetic resonance (NMR) and electron paramagnetic resonance (EPR) experiments to study the structural evolution of Li 4 C 60 and how its electronic ground state depends on the crystal symmetry. The compound in the two-dimensional polymer phase with mixed interfullerene.

The phonon spectrum of YBa 2 Cu 3 O y depends on the oxygen concentration. With decreasing oxygen content and LO mode at cm-1 increases rapidly while the mode content between and cm-1 decreases. These changes are accompanied by an equally rapid increase of a band of TO modes between and cmThe feature at cm-1 may be associated.

EPR spectroscopy of [FeLa] complex. The X-band EPR spectra of an [FeLa] sample obtained by precipitation were recorded at temperatures between 2 and 50 K. Figure 5 shows two representative spectra, taken at K and K.

The EPR signal reveals an anisotropic Kramers doublet with g x = ±g y = ± 0Cited by: Magnetochemistry is concerned with the magnetic properties of chemical ic properties arise from the spin and orbital angular momentum of the electrons contained in a compound.

Compounds are diamagnetic when they contain no unpaired lar compounds that contain one or more unpaired electrons are magnitude of. RESULTS. We began by verifying the bicelle alignment methodology established previously [], preparing conventional DMPC bicelles containing 5-DSA, and using thulium to align bicelles parallel to the magnetic field up to K and K.

Figure 1 shows EPR spectra of 5-DSA in randomly oriented vesicles (top) and parallel aligned bicelles (bottom).). There is a substantial Cited by: 5. Activation of a nonspecific cation current in rat cultured retinal pigment epithelial cells: involvement of a G αi subunit protein and the mitogen‐activated protein kinase signalling pathway.

Jennifer S. Ryan; Melanie E. Kelly. A new organic–inorganic hybrid salt [L] 2 [MnCl 4] (I) where L + is the 2-methyl(pyridinyl)imidazo[1,5-a]pyridinium cation, is built of discrete organic cations and tetra­chlorido­manganate(II) L + cation was formed in situ in the oxidative cyclo­condensation of 2-pyridine­carbaldehyde and CH 3 NH 2 HCl in methanol.

The structure Author: Olga Yu. Vassilyeva, Elena A. Buvaylo, Vladimir N. Kokozay, Svitlana R. Petrusenko, Andrii K. Melnyk. MONOCLINIC Tm2(SO4)3• 8H2O, J. Chem. Phys. 61, () G. Shenoy, J. Stöhr, W. Wagner, G. Kalvius and B. Dunlap THE INFLUENCE OF SMALL MAGNETIC FIELDS ON THE MÖSSBAUER RELAXATION SPECTRA OF Au: Yb ALLOYS Solid State Comm.

15, () J. Stöhr MÖSSBAUER RELAXATION STUDIES OF Yb IN DILUTE Au:. Reaction of 1 with Cp 2 ZrCl 2 and Cp 2 HfCl 2 was reported to lead to the formation of the respective metallacyclosilanes with the metals in the oxidation state +4, without any sign of reductive elimination.

34,39 Therefore, attempts directed to the preparation of zirconium and hafnium analogues of 2 required metal salts of zirconocene and hafnocene in Cited by:   A known [beta] nucleator is a calcium salt of pimelic acid [36].

Among the three crystalline forms, the most prevalent is the monoclinic [alpha]-form. To improve the clarity of polypropylene an a nucleator to promote formation of monoclinic crystals is required. Indium(III) sulfate (In 2 (SO 4) 3) is a sulfate salt of the metal indium.

It is a sesquisulfate, meaning that the sulfate group occurs 1 1 2 times as much as the metal. It may be formed by the reaction of indium, its oxide, or its carbonate with sulfuric acid. An excess of strong acid Chemical formula: In₂(SO₄)₃. Try the new Google Books.

Check out the new look and enjoy easier access to your favorite features Molecular Medicine. Trent Ron. Academic phenotype population potential predictive produce protein proteome recombination risk screening SNPs somatic cell specific stem cells studies syndrome Table target thalassemia tion tissue tumor.

Tutton's salts are a family of salts with the formula M 2M'(SO 4) 2 (H 2O) 6 (sulfates) or M 2M'(SeO 4) 2 (H 2O) 6 (selenates). These materials are double salts, which means that they contain two different cations, M + and M' 2+ crystallized in the same regular ionic g: EPR.

Condensation of Npyridylimidoylpyridylamidine with S2Cl2 affords fused N-bridgehead-1,2,5-thiadiazolium salts, which can be converted to 3,5-bis(2-pyridyl)hydro-1,2,4,6-thiatriazine (Py2TTAH). Oxidation of Py2TTAH with iodine yields the corresponding 1,2,4,6-thiatriazinyl radical, identified by EPR.

The Role of Water in the Hydrothermal Method. In a hydrothermal reaction, water can participate in the reaction as a chemical component or it can be a solvent or a puffing accelerator [44,45,46].As a pressure transmission medium, the formation of inorganic compounds can be achieved by accelerating the osmotic reaction and controlling the physical and chemical Cited by: 8.

The chalcogens (/ ˈ k æ l k ə dʒ ɪ n z /) are the chemical elements in group 16 of the periodic group is also known as the oxygen consists of the elements oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and the radioactive element polonium (Po).

The chemically uncharacterized synthetic element livermorium (Lv) is predicted to be a chalcogen as well. Einsteinium is a synthetic element with the symbol Es and atomic number As a member of the actinide series, it is the seventh transuranic element.

Einsteinium was discovered as a component of the debris of the first hydrogen bomb explosion inand named after Albert most common isotope einsteinium (half-life days) is produced artificially Pronunciation: /aɪnˈstaɪniəm/ ​(eyen-STY-nee-əm). [(diphosphine)Ni(pdt)Fe(CO) 3] + Preliminary studies revealed that (dppe)Ni(pdt)Fe(CO) 3 (1) and related complexes undergo oxidation at ~ V +/ this reason, the new cations were prepared from the neutral Ni(i)Fe(i) complexes and FcBF first example of the series is [1]BF 4, which could be isolated as a brown salt Cited by: The difference of the g factors in various europium salts is related to a noticeable intermixture of the states of free ions by crystal fields and magnetic fields.

From the directional dependence of the Zeeman effect, it is concluded that the point symmetry C 2 of the Eu 3+ ions in the lattice is D 6, in good approximation, with the hexagonal.