Alkali metal iodides

Metal halides can in some cases, be used to replace other atoms or groups besides fluorine with halogen Polyfluoroacyl fluorides and chlorides can be converted to fluoroalkyl iodides by simply heating the reactant in the presence of an alkali metal iodide [[Pg.382]

CI2 into alkaline solutions of Br ). lodates can be prepared either by direct high-pressure oxidation of alkali metal iodides with oxygen at 600° or by oxidation of I2 with chlorates ... 

Karayannis NM, Mikulski CM, Strocko MJ, et al. 1971b. Reactions of alkali metal iodides with diisopropyl methylphosphonate. Inorg Chim Acta 5(3) 357-361. 

Hexafluororhenate(V) salts are obtained by the interaction of the appropriate alkali metal iodide with ReFg in either SO 2 or IF5 (57). For most cations the magnetic moments lie between about 1.3 and 1.4 B.M. at 298 °K, slightly higher results being found for the potassium salt (39). 

Yellow hexagonal crystals density 6.16 g/cm melts at 402°C vaporizes at 954°C decomposes at 180°C when exposed to green light slightly soluble in water (0.44 g/L at 0°C and 0.63 g/L at 20°C) Ksp 8.49xlCL9 at 25°C partially soluble in boiling water (4.1 g/L at 100°C) insoluble in ethanol soluble in alkalis and alkali metal iodide solutions. 

Scintillation counters are used to detect energy-rich particles and y rays. They consist of a combination of a phosphor, usually a single crystal, with a photomultiplier or a photodiode as detector. Alkali-metal iodides (see Table 56), Bi4Ge3012, CaW04, ZnW04, CdW04, and ZnS Ag+, Ni+ are typical phosphors for this application [5.438]. 

ESI-Mass spectra were obtained using JEOL HX/HX110A mass spectrometer equipped with ESI source (Analytica of Branford, Branford, Cl) and channel array detector, calibrated in the FAB mode with alkali metal iodides. Sample solutions were diluted 2000- fold with 50% aqueous methanol (v/v) containing 0.1% acetic acid. 

Reactions with aryl bromides and added alkali metal iodides involve additional equilibria in which aryl bromides give the more reactive aryl iodides ... 

P. M. F. J. Costa, S. Friedrichs, J. Sloan and M. L. H. Green, Imaging lattice defects and distortions in alkali-metal iodides encapsulated within double-walled carbon nanotubes. Chem. Mater. 17, 3122-9 (2005). 

Bismuth(III) iodide has been prepared in the absence of solvents by the reaction of iodine with elemental bismuth1,2 or with bismuth (III) sulfide.3 Alternative methods involve precipitation of bismuth(III) iodide from aqueous solutions of bismuth salts by adding alkali-metal iodides,4 and the addition of bismuth (III) oxide to a solution of iodine and tin(II) chloride in saturated hydrogen chloride.5 In either case the initial product is purified by sublimation, usually in an atmosphere of carbon dioxide. The product obtained by precipitation requires several resublimations for complete purification.6... 

Analogs of the dichloro complex are prepared by a variety of methods, many of which are specific for single compounds. The dibromo complexes can be prepared using nitrosyl bromide or from A-methyl-iV-nitrosotoluene-4-sulfonamide and rhodium tribromide. Replacement of the tribromide by the trichloride and an alkali metal iodide gives diiodo complexes (equations 50 and 51). 

Mallouk and co-workers [6, 26, 206] reported the photodecomposition of acidic KI to H2 and iodine under visible light irradiation. For this purpose, IQNbeOn was internally loaded with Pt, ion exchanged partially with acid to obtain K4 jcHj Nb60i7 /JH2O (x 2.5) and then sensitized with RuLs (L = 4,4 -dicarboxy-2,2 -bipyridine). It was found that KI is the best reactant among the alkali metal iodides (Figure 16). 

The reaction of oxiranes and CO2 yields 1,3-dioxolanones in the presence of various catalysts, such as organic antimony compounds, organic tin compounds, MoCl5-Ph3P, a mixture of phenols, alkali metal iodides, and metal oxides, and Ni° complexes (Eq. 201). ... 

Ozeki, N., Shimomura, N., Harada, H. A new Sandmeyer iodination of 2-aminopurines in non-aqueous conditions combination of alkali metal iodide and iodine as iodine sources. Heterocycles 2001, 55,461-464. 

Interestingly, little work has been done on non-metallic p-block elements in ILs. Besides the oxidation of Bmim-I and alkali metal iodides discussed above [163], also the electrochemical reduction of iodine in Bmim-NTf2 was studied. Similar to the oxidation study, the authors report two reduction peaks. A detailed mechanistic and kinetic analysis was performed and the electrode process was found to be consistent with Buder-Volmer kinetics [171]. 

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