Abstract
By means of thermal analysis, the titled complexes were shown to degradate in two stages up to 500°C. Through the first-stage decomposition of [M(NH3)6][M’(CN)6], 1 mol of HCN gas and 4 mol of NH3 gas evolved during a pronounced endothermic reaction (except for the complex with Ru-Fe as M-M’). Different combinations of M-M’ can reverse order of the two kinds of gas-evolution in the complexes; the loss of ligand leads to a di- or poly-nuclear complex in which the NH2 and/or the CN group has bridged; the electronic conductivity increased with the progress of bridging; the metal ion in complexes with Co-Fe and Co-Co as M-M’ was reduced. The complex [MCI(NH3)5][Ni(CN)4] also decomposed in two stages with the simultaneous gas-evolution of HCN and NH3.
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Kohata, S., Asakawa, M., Maeda, T. et al. Thermoanalytical Studies on the Double Complexes [M(NH3)6][M’(CN)6] and [MCl(NH3)5][Ni(CN)4] (M=Cr, Co, Ru, Rh; M’=Fe, Co). ANAL. SCI. 2, 325–330 (1986). https://doi.org/10.2116/analsci.2.325
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DOI: https://doi.org/10.2116/analsci.2.325