Ir O4 Sr2 Huang Q, Soubeyroux J, Chmaissem O, Natali Sora I, Santoro A, Cava R, Krajewski J, Peck W Journal of Solid State Chemistry 112 (1994) 355-361 Neutron powder diffraction study of the crystal structures of Sr2RuO4 and Sr2IrO4 at room temperature and at 10K _cod_database_code 1008662 _database_code_amcsd 0016550 5.48463 5.48463 25.7977 90 90 90 I4_1/acd atom x y z occ Sr1 0 0 .17573 Ir1 0 0 0 O1 .1981 .1981 .25 .861 O2 .3019 .3019 .25 .139 O3 0 0 .07974