Caesium dioxide

Although XPS, HREELS and STM indicate that carbon dioxide is unreactive to the Cu(110) surface at 295 K, a caesium-modified surface (cr =1.5 x 1014 cm-2) results in the formation of well-ordered chain structures... 

See Xenon hexafluoride Silicon dioxide Xenon hexafluoride Caesium nitrate... 

In the preparation of xenon difluoride dioxide from caesium nitrate and xenon tetrafluoride oxide, the latter must always be used in excess to prevent formation of explosive xenon trioxide. 

See Caesium azide Sulfur dioxide, also Poly (selenium nitride)... 

See BORANES aluminium chloride, sulfur dioxide Caesium azide... 

T. Scheerer found that when heated to a yellow heat (c.1000°), in a closed platinum crucible, potassium carbonate loses about 0 5 per cent, in weight owing to the loss of carbon dioxide which is taken up again at lower temp. W. Dittmar could detect no change when heated to redness in an atm. of carbon dioxide, but it is partially converted into oxide in an atm. of nitrogen, and still more so in an atm. of hydrogen. P. Lebeau found that rubidium and caesium carbonates lose carbon dioxide when heated in vacuo, and, if the vacuum be maintained, decomposition is complete. P. Lebeau also found that the dissociation press, of rubidium carbonate is ... 

R. Bunsen and G. Kirchhoff made rubidium hydrocarbonate, RbHC03, by evaporating over sulphuric acid, a soln. of rubidium carbonate in water sat. with carbon dioxide and in an atm. of carbon dioxide. Similar remarks apply to caesium hydrocarbonate, CsHC03. 

H. Moissan found that csesammonium, CsNH3, is formed when ammonia under atm. press, acts on caesium in the form of fine wire at 40°. On cooling by means of a mixture of acetone and solid carbon dioxide, a blue liquid is obtained from which the crystalline, brass-coloured, csesammonium separates. When brought... 

Caesium bromoxenate, 0237 Caesium chloroxenate, 3964 Caesium hydrogen xenate, 4253 Krypton difluoride, 4307 Potassium hexaoxoxenonate—xenon trioxide, 4669 Tetrafluoroammonium hexafluoroxenate, 4380 Xenon difluoride, 4326 Xenon difluoride dioxide, 4316 Xenon difluoride oxide, 4313 Xenon hexafluoride, 4371 Xenon tetrafluoride, 4347 Xenon tetrafluoride oxide, 4340 Xenon tetraoxide, 4857... 

Potassium hydride, KH.—Moissan5 prepared the hydride by a method analogous to that employed by him for the corresponding sodium derivative, the excess of potassium being dissolved by liquid ammonia. Ephraim and Michel6 passed hydrogen into potassium at 350° C., and found the reaction to be promoted by the presence of calcium. The hydride forms white crystals of density 0-80. The vapour-tension for each temperature-interval of 10° between 350° and 410° C. corresponds with the values 56, 83, 120, 168, 228, 308, and 430 mm. respectively.7 In chemical properties potassium hydride resembles the sodium compound, but is less stable. Its stability is greater than that of rubidium hydride or caesium hydride. Carbon dioxide converts it into potassium formate. 

This hydride is more stable than that of caesium, but less stable than that of sodium or of potassium.2 It is very reactive. When heated in vacuum at 300° C. it decomposes into its constituent elements. At ordinary temperatures it is attacked by the halogens. Carbon dioxide converts it into rubidium formate ... 

Caesium sulphites.3—The normal sulphite, Cs2S03, is prepared by addition of an equivalent proportion of caesium carbonate to an alcoholic solution of the salt saturated with sulphur dioxide. It forms white, readily soluble crystals. 

Caesium carbonate, Cs2C03.—The normal carbonate is produced by the interaction of the hydroxide and ammonium carbonate.8 It forms deliquescent, hydrated crystals, the anhydrous salt being very hygroscopic, and melting at red heat. When heated in vacuum it loses carbon dioxide. It is soluble in water to a very alkaline solution, the heat of solution being 11-84 Cal.7 At 20° C. the saturated solution contains 72-34 per cent, of the anhydrous salt. Several hydrates are known. The heat of formation of the anhydrous salt is 274-54 Cal.8... 

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