Category: 13940-83-5

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Chemical shifts observed in Lα X-ray emission lines of elements in the range of 26 ≤ Z ≤ 30 in their halogen compounds, published in 2012-05-31, which mentions a compound: 13940-83-5, Name is Nickel(ii)fluoridetetrahydrate, Molecular F2H8NiO4, Formula: F2H8NiO4.

The chem. shifts and full widths at half maximum intensity of Lα x-ray emission lines of elements in the range 26 ≤ Z ≤ 30 were studied in their halogen compounds using a wavelength-dispersive X-ray fluorescence spectrometry. The chem. shifts for F based compounds are higher than that of Cl and Br based compounds

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Nickel(ii)fluoridetetrahydrate(SMILESS: [H]O[H].[H]O[H].[H]O[H].[H]O[H].[Ni+2].[F-].[F-],cas:13940-83-5) is researched.Electric Literature of C11H13OP. The article 《Photoelectron spectra induced by x-rays of above 600 nonmetallic compounds containing 77 elements》 in relation to this compound, is published in Matematisk-Fysiske Meddelelser – Kongelige Danske Videnskabernes Selskab. Let’s take a look at the latest research on this compound (cas:13940-83-5).

The photoelectron spectra induced by Al (1486.6 eV) or Mg (1253.6 eV) x-ray excitation of >600 compounds indicate that the chem. shift (dI) of the ionization energy (I) of the inner shells is not only dependent on the oxidation state of a given element, but also on the ligands. Even for a fixed oxidation state, dI was 2-8 eV in a comparative study of all elements which are neither noble gases nor strongly radioactive. However, this conclusion is, to some extent, modified by reproducible pos. potentials on nonconducting samples which were measured at 1-4V in typical cases and compared with the theory for almost ionic cubic crystals and with experiments with mixtures of nonconducting powd. MgF2, BaSO4, and ThF4 and metals such as Au, Tl2O3, and CuS. The widths and highly varying intensities of photoelectron signals are theor. discussed. The d and f shells of transition and post-transition group atoms give relatively intense signals even for I 8-30 eV since the 1486.6-eV photons most readily ionize shells with small average radii. Interesting relations can be established with electron transfer spectra and optical electronegativities. Special satellites occur in Cu(II), La(III) and other lanthanide compounds The adaptation of the electronic d. of the neighbor atoms in the ionized system contribute to dI which cannot be explained exclusively on the basis of fractional at. charges and the Madelung potential.

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Related Products of 13940-83-5. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: Nickel(ii)fluoridetetrahydrate, is researched, Molecular F2H8NiO4, CAS is 13940-83-5, about Mechanism of film formation on nickel anodes in a molten NH4F.2HF. Author is Tasaka, A.; Tsukuda, Y.; Yamada, S.; Matsushita, K.; Kohmura, A.; Muramatsu, N.; Takebayashi, H.; Mimaki, T..

The mechanism of film formation on the Ni anode in a well dehydrated melt of NH4F.2HF was studied at 1000C. The potentiodynamic and potentiostatic polarization behaviors of the Ni anode were studied to elucidate the anodic processes. The oxidized layer was composed of NiF2 with a small amount of nickel oxides such as NiO and Ni2O3 or oxyfluorides having plural oxidation states and a highly oxidized nickel fluoride formed on the Ni anode polarized at potentials >4.5 V vs. H2 and it grew thicker through the repetition of the alternate formation and degradation with the time of electrolysis. The composition and the thickness of the oxidized layer may reflect on the c.d. on the nickel anode under polarization.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Nuclear magnetic resonance study of some paramagnetic hydrated fluorides》. Authors are Easwaran, K. R. K.; Srinivasan, R..The article about the compound:Nickel(ii)fluoridetetrahydratecas:13940-83-5,SMILESS:[H]O[H].[H]O[H].[H]O[H].[H]O[H].[Ni+2].[F-].[F-]).Application of 13940-83-5. Through the article, more information about this compound (cas:13940-83-5) is conveyed.

A preliminary study of 1H and 19F in compounds of the type MF2.4H2O (M = Mn, Fe, Co, Ni, Zn) was carried out (at room temperature and 90°K.), to investigate the nature of the hyperfine interaction. The samples were prepared by dissolving the carbonates (except in the case of Fe, where pure Fe powder was used) in 40% HF and precipitating with EtOH. The Fe compound was not very stable, and was kept in vacuo. X-ray powder photographs revealed the Fe, Co, Ni, and Zn salts to be isomorphous. For the 1H resonance, an increase in line width at low temperatures is attributed to the increase in the electronic polarization. The 19F fractional shift, α, increased through the Ni++, Co++, Fe++ series (increasing number of unpaired spins) at room temperature This order was not preserved at lower temperatures Paramagnetic susceptibilities were also measured at room temperature by the Gouy method.

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Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 13940-83-5, is researched, SMILESS is [H]O[H].[H]O[H].[H]O[H].[H]O[H].[Ni+2].[F-].[F-], Molecular F2H8NiO4Journal, Chimia called Photoelectron spectrometry of inorganic solid, Author is Joergensen, Christian K., the main research direction is photoelectron spectrometry inorganic solid; Hartree potentials photoelectron spectrometry; Madelung potential ionic compound.Reference of Nickel(ii)fluoridetetrahydrate.

A discussion ia given of the highly different probability of ionization of each shell of a given element by x-ray photons. The chem. shift of ionization energies I indicate differing Hartree potentials. The multiple I of an inner shell in systems having pos. spin quantum number S were studied in 11 high-spin Ni(II) compounds Scotch tape was used as internal standard The Madelung potential in almost ionic compounds and the relation between optical electronegativities and I of valence electrons are treated.

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Electric Literature of F2H8NiO4. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Nickel(ii)fluoridetetrahydrate, is researched, Molecular F2H8NiO4, CAS is 13940-83-5, about Effects of the external magnetic field and chemical combination on Kβ/Kα X-ray intensity ratios of some nickel and cobalt compounds. Author is Porikli, S.; Kurucu, Y..

A systematic study of x-ray intensity ratios of the K-series lines was made on compounds of Ni and Co to examine the influence of chem. state and 0.6 and 1.2 T external magnetic fields on energy-dispersive x-ray fluorescence anal. The samples were excited by 22.69 keV x-rays emitted from a Cd-109 radioisotope source and characteristic K x-rays emitted from the samples were counted by an Si(Li) detector. For B = 0, the present exptl. results were compared with the exptl. and theor. data in literature. The results demonstrate a clear dependence of the Kβ/Kα intensity ratios on the chem. state of the element in the sample and values of external magnetic field.

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Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Nickel(ii)fluoridetetrahydrate, is researched, Molecular F2H8NiO4, CAS is 13940-83-5, about Chemical shifts observed in Lα X-ray emission lines of elements in the range of 26 ≤ Z ≤ 30 in their halogen compounds.SDS of cas: 13940-83-5.

The chem. shifts and full widths at half maximum intensity of Lα x-ray emission lines of elements in the range 26 ≤ Z ≤ 30 were studied in their halogen compounds using a wavelength-dispersive X-ray fluorescence spectrometry. The chem. shifts for F based compounds are higher than that of Cl and Br based compounds

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Electric Literature of F2H8NiO4. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Nickel(ii)fluoridetetrahydrate, is researched, Molecular F2H8NiO4, CAS is 13940-83-5, about Effects of the external magnetic field and chemical combination on Kβ/Kα X-ray intensity ratios of some nickel and cobalt compounds. Author is Porikli, S.; Kurucu, Y..

A systematic study of x-ray intensity ratios of the K-series lines was made on compounds of Ni and Co to examine the influence of chem. state and 0.6 and 1.2 T external magnetic fields on energy-dispersive x-ray fluorescence anal. The samples were excited by 22.69 keV x-rays emitted from a Cd-109 radioisotope source and characteristic K x-rays emitted from the samples were counted by an Si(Li) detector. For B = 0, the present exptl. results were compared with the exptl. and theor. data in literature. The results demonstrate a clear dependence of the Kβ/Kα intensity ratios on the chem. state of the element in the sample and values of external magnetic field.

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Reference of Nickel(ii)fluoridetetrahydrate. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Nickel(ii)fluoridetetrahydrate, is researched, Molecular F2H8NiO4, CAS is 13940-83-5, about Effect of triethylamine/anhydrous HF ratio on the anodic polarization of nickel in acetonitrile media. Author is Noel, M.; Suryanarayanan, V.; Krishnamoorthy, S..

The effect of the addition of 0.5M, 1.5M, 3M and 4.5M triethylamine in acetonitrile containing 3M anhydrous HF (AHF) on the anodic polarization behavior of Ni was studied using cyclic voltammetry and chronoamperometry. The structure and composition of the film formed on a nickel electrode in these media was studied using SEM and XRD. The severe dissolution noticed in aqueous HF solution decreases significantly in acetonitrile containing AHF. Addition of small molar ratios of triethylamine leads to enhanced uniform dissolution due to the simultaneous presence of H+ as well as fluoride ions. Further addition of triethylamine suppresses the HF concentration This leads to anodic dissolution at a significantly more pos. potential. Dissolution and film growth occurs as individual crystallites. In all cases, NiF2·4H2O and another phase is formed on the electrode surface.

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HPLC of Formula: 13940-83-5. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: Nickel(ii)fluoridetetrahydrate, is researched, Molecular F2H8NiO4, CAS is 13940-83-5, about Chemical transformations of crystal hydrates of iron, cobalt, and nickel fluorides on heating.

Heating FeF2.4H2O in Ar or CoF2.4H2O and NiF2.H2O in Ar or air caused dehydration and partial hydrolysis of the products. Fe2F4O formed on heating FeF2.4H2O in O or air. The temperature of dehydration increased with decreasing ionic radius of metal ions.

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