RuSe2 Stassen W N, Heyding R D Canadian Journal of Chemistry 46 (1968) 2159-2163 Crystal structures of RuSe2, OsSe2, PtAs2, and alpha-NiAs2 _database_code_amcsd 0012149 5.935 5.935 5.935 90 90 90 Pa3 atom x y z Ru 0 0 0 Se .381 .381 .381