The sonication of InCl3 with thioacetamide in an aqueous solution has led t
o different products, depending on the sonication temperature. Sonication a
t 0 degreesC yielded In2O3 as the major product and In2S3 as a minor compon
ent. On the other hand, when the reaction is carried out at "room temperatu
re", nanocrystalline In2S3 is obtained as the sole product. The products of
sonication at 0 degreesC are obtained in the amorphous form. An explanatio
n for this is offered based on the hot spot mechanism.