Synthesis and thermal decomposition of antimony(III) oxide hydroxide nitrate

The thermal decomposition of the only known antimony nitrate antimony(III) oxide hydroxide nitrate Sb4O4(OH)(2)(NO3)(2), whose synthesis routes were reviewed and optimized was followed by TG-DTA under an argon flow, from room temperature up to 750 degrees C. Chemical analysis (for hydrogen and nitrogen) performed on samples treated at different temperatures showed that an amorphous oxide hydroxide nitrate appeared first at 175 degrees C, and decomposed into an amorphous oxide nitrate above 500 degrees C. Above 700 degrees C, Sb6O13 and traces of alpha-Sb2O4 crystallized.