Manganese -, perchlorate

Other Transition Element Perchlorates. Both divalent and trivalent manganese perchlorate compounds [13770-16-6 13498-03-8] are known. Perchlorates of Fe, Co, Ni, Rh, and Pd have been produced as colored crystals (70—72). 

Chemical Properties. On thermal decomposition, both sodium and potassium chlorate salts produce the corresponding perchlorate, salt, and oxygen (32). Mixtures of potassium chlorate and metal oxide catalysts, especially manganese dioxide [1313-13-9] Mn02, are employed as a laboratory... 

Large amounts of chloride, cobalt(II), and chromium(III) do not interfere iron(III), nickel, molybdenum)VI), tungsten(VI), and uranium(VI) are innocuous nitrate, sulphate, and perchlorate ions are harmless. Large quantities of magnesium, cadmium, and aluminium yield precipitates which may co-precipitate manganese and should therefore be absent. Vanadium causes difficulties only... 

To decide whether the reaction involves 1- or 2-electron transfers, i.e. chromium-(rv) or chromium(V) is formed first, the induced oxidation of manganese(II) was investigated. When sodium perchlorate was used to maintain a constant ionic strength, the rate of oxidation of benzaldehyde dropped to one-half of the original rate in the presence of manganese(II) ions. On the contrary, when magnesium perchlorate was used as the neutral salt, the rate was reduced to of its original value. This peculiar observation, however, has not been interpreted. 

The same goes for carbon (the accident was caused because carbon was used instead of manganese dioxide, by mistake), sulphur and phosphorus. There was a detonation with carbon. With phosphorus the detonation occurred once the carbon disulphide used to dissolve phosphorus vapourised red phosphorus behaves the same way. The same happened with the potassium chlor-ate/sodium nitrate/sulphur/carbon mixture, which led to a violent detonation as well as with the potassium perchlorate/aluminium/potassium nitrate/barium nitrate/water mixture. In the last case the explosion took place after an induction period of 24h. 

Dimethoxypropane was being used to dry manganese and nickel perchlorates by heating above 65°C. A violent detonation interrupted the operation. 

Dining dehydration of manganese(II) perchlorate [1] or nickel(II) perchlorate [2] with dimethoxypropane, heating above 65°C caused violent explosions, probably involving oxidation by the anion [1] (possibly of the methanol liberated by hydrolysis). Triethyl orthoformate is recommended as a safer dehydrating agent [2] (but methanol would still be liberated). 

Lead dioxide Lead perchlorate Lithium chlorate Lithium hypochlorite Lithium perchlorate Lithium peroxide Magnesium bromate Magnesium chlorate Magnesium perchlorate Magnesium peroxide Manganese dioxide Mercurous chlorate Mono-(trichloro)-tetra-(mono-potassium dichloro)-penta-s-triazinetrione... 

Tetraamminehydroxynitratoplatinum(IV) nitrate, 4594 Tetraamminepalladium(II) nitrate, 4588 Tetraamminezinc peroxodisulfate, 4586 l,4,8,ll-Tetraazacyclotetradecanenickel(II) perchlorate, 3376 Tctrakis(/j.3-2-amiiio-2-methylpropanolato)tetrakis(//2-2.aniiiio-2-methylpropanolato)hexacopper(II) perchlorate, 3883 Tetrakis(3-methylpyrazole)cadmium sulfate, 3716 Tetrakis(3-methylpyrazole)manganese(II) sulfate, 3717 Tctrakis(4-/V-nicthylpyridinio)porphinecobalt(III)(5 +) perchlorate, 3908 Tetrakis(4-iV-methylpyridinio)porphineiron(III)(5+) perchlorate, 3909 Tetrakis(pyrazole)manganese(II) sulfate, 3538... 

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