Abstract

The course of the thermal decomposition of the metal(II) thiocyanates Co(SCN) 2 and Ni(SCN) 2 has been studied as function of pressure and ambient atmosphere. In nitrogen as well as under vacuum conditions these two compounds decompose in the temperature range of 600 – 650K under formation of the respective metal disulfides CoS 2 (cattierite) and NiS 2 (vaesite). In spite of the structural analogies between the initial materials as well as between the solid products, different macroscopic mechanisms for the decomposition processes are established by morphological investigations.

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