Bi0.5 Cu2 O10 Sr4 Tl0.5 Maignan A, Huve M, Michel C, Hervieu M, Martin C, Raveau B Physica C 208 (1993) 149-154 A 55 K superconducting copper oxycarbonate: Tl1-xBixSr4Cu2CO3O7 _cod_database_code 1001584 _database_code_amcsd 0015045 3.8309 3.8309 16.518 90 90 90 P4/mmm atom x y z occ Tl1 .077 0 0 .125 Bi1 .077 0 0 .125 Sr1 .5 .5 .1608 Sr2 .5 .5 .3733 Cu1 0 0 .2641 C1 0 0 .5 O1 .67 .5 0 .25 O2 0 0 .125 O3 .13 0 .426 .25 O4 .34 0 .5 .25 O5 .5 0 .268