Ba4 Cu2 Hg O10 Tl2 Martin C, Huve M, Van Tendeloo G, Maignan A, Michel C, Hervieu M, Raveau B Physica C 212 (1993) 274-278 A mercury-based superconducting cuprate, intergrowth of the 2201 and 1201 structures Tl2HgBa4Cu2O10+y _cod_database_code 1001575 _database_code_amcsd 0015055 3.8584 3.8584 42.2031 90 90 90 I4/mmm atom x y z Hg1 0 0 0 Tl1 0 0 .2240 Cu1 0 0 .1134 Ba1 .5 .5 .0673 Ba2 .5 .5 .1598 O1 0 0 .050 O2 .5 0 .114 O3 0 0 .180 O4 .5 .5 .229