Bi0.5 Cu Hg0.5 La0.5 O5 Sr1.5 Pelloquin D, Michel C, Van Tendeloo G, Maignan A, Hervieu M, Raveau B Physica C 214 (1993) 87-92 A new "1201" mercury cuprate. The 27K-superconductor Hg0.5Bi0.5Sr2-xLaxCuO5-d _cod_database_code 1001573 _database_code_amcsd 0015056 3.7753 3.7753 8.8765 90 90 90 P4/mmm atom x y z occ Hg1 0 0 0 .5 Bi1 0 0 0 .5 Sr1 .5 .5 .2948 .75 La1 .5 .5 .2948 .25 Cu1 0 0 .5 O1 .5 0 .5 O2 0 0 .228 O3 .5 .5 0