Sb2Se3, SnSe, SnSe2, SnSb2Se4, and Sn2Sb6Se11 were prepared from powdered elements in a planetary ball mill. The progress of the reactions was investigated in situ by difference thermoanalysis and ex situ by X-ray analyses. SnSb2Se4, and Sn2Sb6Se11 are probably both positioned in the homogeneity region of the only ternary compound of the system Sn-Sb-Se.