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Molten lithium nitrate-potassium nitrate eutectic: The reaction of two cobalt(III) complexes

1978; Pergamon Press; Volume: 40; Issue: 7 Linguagem: Inglês

10.1016/0022-1902(78)80044-x

1878-1225

H. Frouzanfar, D.H. Kerridge,

Molten salt chemistry and electrochemical processes

The temperatures and stoichiometries of reaction of sodium hexanitrocobaltate(III) and hexamminocobalt(III) chloride in molten lithium nitrate-potassium nitrate eutectic have been determined. The eventual solid product in each case was tricobalt tetraoxide together with a mixture of gases. Nitrous oxide was accompanied by nitrogen dioxide and nitric oxide from the first complex and by ammonia, water and probably nitrogen from the second. A series of intermediate reactions have been elucidated, involving unusual products such as cobalt(II) oxide from the first complex and ammonium ions from the second. Ammonium chloride has been shown to decompose rapidly in the nitrate melt, forming nitrous oxide and water.