Thermal behaviour of titanium seleno-telluride Ti5Ch8 in Ar and N2 atmospheres

A series of TiSe1*60--xTex, where 0*?x*?1*60, was prepared. The samples were characterized by powder X--ray diffraction and thermogravimetric analysis in Ar and N2 atmospheres. The XRD measurements showed that the titanium seleno--tellurides form a continuous solid solution of a hexagonal structure. Thermal behaviour of the compounds was studied by thermogravimetric analysis for samples x=0, 0*16, 0*80, 1*44, 1*60 in the temperature interval from 25 to 1273K. After heating in Ar, no mass loss was observed in selenide (x=0). In contrast, for telluride (x=1*60) mass loss took place due to a formation of ditelluride. For seleno--tellurides in nitrogen atmosphere both disproportion reaction and a reaction of ditelluride with N2 occurred simultaneously.