Potassium trioxalatoferrate

Preparation of Potassium Trioxalatoferrate(III). First prepare barium oxalate. To do this, add a solution of 2.5 g of barium chloride dihydrate in 6 ml of water to a solution of 1.5 g of sodium oxalate in 40 ml of water. Filter off the formed crystals on a Buchner funnel and wash them several times with cold water. 

To prepare potassium trioxalatoferrate(III), put 1.25 g of iron(III) sulphate, the prepared barium oxalate, 1.5 g of potassium oxalate, and 30 ml of water into a 500-ml beaker. Heat the mixture for several hours in a water bath, maintaining a constant volume. After separation of the barium sulphate precipitate, evaporate the filtrate to a volume of 5 ml and cool it. Filter off the potassium trioxalato-ferrate(III) crystals, rinse them with a small amount of water and then with ethanol, and dry them in a vacuum-desiccator over sulphuric acid. Write the equations of the reactions. 

I. Preparation of Reduced Iron (Cobalt, Nickel) (245). 2. Pr ara-tion of Pyrophoric Iron (246). 3. Preparation of Iron(II) Oxide (246). 4. Preparation of Macrocrystalline Iron(III) Oxide (246). 5. Preparation of Nickel(III) Oxide (247). 6. Preparation and Properties of Sodium Ferrite (247). 7. Preparation of Anhydrous Cobalt (Nickel) Chloride in an Ethanol Solution (247). 8. Preparation of Anhydrous Iron(IlI) Chloride in a Fluidized Bed (247). 9. Preparation of Potassium Trioxalatoferrate(III) (247). 10. Preparation of Tetraamminecarbonatocobalt(III) Nitrate (248). 

A kinetic study [69] of the isothermal decomposition of potassium trioxalatoferrate(III) ... 

Fe(CO) 4K Iron tetracarbonyl dihydride, potassium salt, 2 244 [Fe(C204)3]K3-3H20 Potassium trioxalatoferrate(III), 1 36 [Fe(C5H5N)4]Cl2 Tetrapyridine-iron(II) chloride, 1 184 FeCl2 Iron(II) chloride, 1-hydrate, 5 181 2-hydrate, 6 179 FeCl Iron (III) chloride, 3 190 ... 

Fe(CO)4K2 Iron tetracarbonyl dihydride, potassium salt, 2 244 [Fe(C204)3]K3-3H20 Potassium trioxalatoferrate(III), 1 36... 

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