10377-51-2Relevant articles and documents
LI/LiI/IODINE GALVANIC CELLS USING IODINE-POLY(2,5-THIENYLENE)ADDUCTS AS ACTIVE MATERIAlS OF POSITIVE ELECTRODES
Yamamoto, Takakazu,Zama, Masanobu,Yamamoto, Akio
, p. 1577 - 1580 (1984)
Iodine adducts of poly(2,5-thienylene) serve as good active materials of positive electrodes of Li/LiI7iodine galvanic cells.Discharge curves of the galvanic cells at 500 kΩ load show stable voltage (2.8-2.3 V) until about 85percent of iodine added is con
Synthesis, properties, and structure of LiAuI4 and KAuI4 with a discussion of the crystal chemical relationship between the halogenoaurates RbAuCl4, AgAuCl4, RbAuBr4 and LiAuI4
Lang, E. Schulz,Abram,Str?hle
, p. 1791 - 1795 (1997)
The alkalimetal iodo aurates(III) MAuI4 (M = Li, K) are obtained in form of single crystals from MI, Au and I2 in a sealed glass ampoule by heating to 550°C and slow cooling to 300°C. KAuI4 crystallizes in the monoclinic space group P21/c with a = 968.6(4); b = 704.5(2), c = 1393.2(7) pm; β = 100.95(2)° and Z = 4. The crystal structure is built up from square planar AuI4- anions and K+ cations. The cations are coordinated by eight I atoms of neighbouring AuI4- anions with distances K-I between 350.0 and 369.6 pm. At 100°C KAuI4 is reduced to form K3Au3I8, which at 180°C decomposes to KI, Au and I2. LiAuI4 forms black, moisture sensitive needles, decomposing in the absence of iodine at 20°C to LiI, Au and I2. It crystallizes in a variant of the RbAuBr4 type structure with the space group P21/a and a = 1511.7(4); b = 433.9(4); c = 710.0(2) pm; β = 121.50(2)°; Z = 2. The crystal chemical relationship between the structures of RbAuCl4, RbAuBr4, AgAuCl4 and LiAuI4 is discussed.
Time-of-flight neutron diffraction study on lithium dinitride iodide, Li7N2i
Marx
, p. 197 - 209 (1998)
The structure of Li7N2I has been redetermined from neutron diffraction data using the high resolution powder diffractometer (HRPD) at the spallation source ISIS, UK. The title compound crystallizes in the space group F4 3m (No.216), a= 1038.797(1) pm, with eight formula units per unit cell. The Li7N2I-structure comprises a cationic Li13N4+ framework which is built of monocapped octahedra. While all Li atoms at the vertices are shared between two neighbouring units, the capping metal atom is shared by four octahedra. The Li13N4+ network is closely related to the B2X6 octahedral framework observed in the pyrochlore structure. Large voids in the structure are occupied by iodide and a Li+I- ion pair. There is evidence that the nonsphericity of the Li+I- dipole induces a complicated Lidisorder in the Li-N framework. Elsevier.
Identification of LiO bands in the infrared spectra of the insertion compound δ-LiV2O5
Pigorsch,Steger
, p. K189-K191 (1990)
Vanadium pentoxide, V2O5, is known for its ability to form LixV2O5 compounds by inserting Li+ ions. This insertion process can be performed by chemical or electrochemical techniques at room temperature. The infrared spectra of samples of chemically prepared 6LiV2O5 and 7LiV2O5 compounds are shown. In comparison to V2O5, the spectra exhibit one main band near 360 cm-1 which does not show any significant difference in both compounds. Spectra of LixV2O5 samples with x = 0.8 and 0.9 also show the Li-O bands but with lower intensity. Electrochemically prepared LixV2O5 compounds give the same infrared spectra as chemically prepared samples. From the isotopic shift of a band near 400 cm-1 in the spectra it is concluded that in the structure of δ-LiV2O5 the Li+ ions occupy fourfold coordinated sites.
Hauptschein, M.,Saggiomo, A. J.,Stokes, C. S.
, p. 680 - 682 (1956)
Chemical lithiation/delithiation of k+-β-ferrite (k-1+xfe11o17)
Ito,Omomo,Fujii
, p. 317 - 321 (2001)
The chemical lithiation/delithiation of K+-β-ferrite has been performed using butyllithium, lithium naphthalide (for lithiation), and iodine (for delithiation). In lithiation using butyllithium, the lithium content (y) in K1+xLiyFe11OI7 was dependent on the average grain size of K+-β-ferrite single crystals; small grains (5 μm) largely reacted with lithium to form K0.99Li1.65Fe11O17. Lithiation was performed by the reduction of Fe3+ to Fe2+. Since the same X-ray diffraction (XRD) patterns were obtained before and after lithiation, the reaction seemed to be restricted to only near the grain surfaces. In lithiation using lithium naphthalide, the lithium content (y), which attained to be 36, was independent of the average grain size of K+-β-ferrite single crystals. This lithium content was remarkably large, compared to y = ca. 1.6 in lithiation using butyllithium. A large amount of Fe° (metal) was detected in the samples. According to scanning electron microscope (SEM) and XRD studies, not only pulverization of grains, but also destruction of the β-structure, occurred upon lithiation. On the other hand, delithiation of deeply lithiated samples was achieved by using iodine as an oxidant.
Novel method for preparing trimethyliodosilane
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Paragraph 0043-0046, (2017/08/30)
The invention relates to a preparation process of trimethyliodosilane, which has the advantages of moderate reaction conditions, simple process, safety in operation, high yield and extremely few three wastes. The preparation process takes anhydrous sodium iodide, anhydrous lithium chloride and trimethylchlorosilane as raw materials and the raw materials react in a dried nitrogen atmosphere to synthesize the trimethyliodosilane. According to the method provided by the invention, a traditional complicated process of preparing trimethyliodosilane from hexamethyldisilane and hexamethyldisiloxane is changed; reaction conditions are moderate and operation is safe; dangers of utilizing high-danger chemicals including metal potassium and sodium are avoided; meanwhile, a high-temperature iodization difficulty is also avoided; in a whole production circulating process, only the trimethyliodosilane product and a byproduct sodium chloride are produced and other three wastes are not generated, so that the process is green and environmental-friendly.
