Ba2 Ca1.9 Cu3 O10.94 Tl1.82 Hervieu M, Michel C, Maignan A, Martin C, Raveau B Journal of Solid State Chemistry 74 (1988) 428-432 The 125 K Superconductor Tl2-x Ba2 Ca2 Cu3 O10+d: A Tentative Structural Model _cod_database_code 1001366 _database_code_amcsd 0013617 3.85 3.85 35.6 90 90 90 I4/mmm atom x y z occ Tl1 0 0 .2185 .879 Ba1 0 0 .6428 Ca1 0 0 .5432 .97 Tl2 0 0 .5432 .03 Cu1 0 0 0 Cu2 0 0 .0995 O1 0 .5 0 O2 0 0 .049 .47 O3 0 .5 .095 O4 0 0 .155 O5 0 0 .718