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, Article, Langmuir called Synthesis of NiF2 and NiF2·4H2O Nanoparticles by Microemulsion and Their Self-Assembly, Author is Ullah, Hameed; Batisse, Nicolas; Guerin, Katia; Rogez, Guillaume; Bonnet, Pierre, the main research direction is synthesis nickel fluoride nanoparticle microemulsion self assembly.Name: Nickel(ii)fluoridetetrahydrate.
Superstructures or self-assembled nanoparticles open the developmentof new materials with improved and/or novel properties. Here, we presentnickel fluoride (NiF2) self-assemblies by successive preparatory methods. Originally, the self-assemblies were obtained by exploiting the water-in-oil microemulsion technique as a result of auto-organization of hydrated NiF2 (NiF2·4H2O) nanoparticles. The nanostructuration of NiF2·4H2O nanoparticles was confirmed by X-ray diffraction (XRD) andtransmission electron microscopy (TEM) data. The size and shape of NiF2·4H2O nanoparticles and their subsequent self-assemblies varied slightly as a function of water-to-surfactant and water-to-oil ratios. SEM (SEM) and TEM characterizations revealed that the nanoparticles are organized intoa succession of self-assemblies: from individual nanoparticles assembled into layers to truncated bipyramids, which further auto-organized them selves into almond-shaped superstructures. Anhydrous NiF2 was achieved by heating NiF2·4H2O self-assembliesunder the dynamic flow of mol. fluorine (F2) at amoderate temperature (350°C). Preservation of self-assembliesduring the transformation from NiF2·4H2O to NiF2 is successfully achieved. The obtained materialshave a sp. surface area (SSA) of about 30 m2/g, morethan 60% of that of bulk NiF2. The lithium-ion (Li+) storage capacities and the mechanism of the nanostructuredsamples were tested and compared with the bulk material by galvanostaticcycling and X-ray absorption spectroscopy (XAS). The nanostructured samples show higher capacities (~650 mAh/g) than the theor.(554 mAh/g) first discharge capacity due to the concomitant redox conversion mechanism of NiF2 and solid-electrolyte interphase (SEI) formation. The nanostructuration by self-assembly appears to pos. influence the lithium diffusion in comparisonto the bulk material. Finally, the magnetic properties of nanostructured NiF2·xH2O (x = 0 or 4) have been measured and appear to be very similar to those of the corresponding bulk materials, without any visible size reduction effect. The hydrated samples NiF2·4H2O show an antiferromagnetic ordering at TN = 3.8 K, whereas the dehydrated ones (NiF2) present acanted antiferromagnetic ordering at TN = 74 K.
In some applications, this compound(13940-83-5)Name: Nickel(ii)fluoridetetrahydrate is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.
Reference:
Quinoxaline – Wikipedia,
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