Cu O6 Sr2 Tl2 Martin C, Maignan A, Huve M, Michel C, Hervieu M, Raveau B European Journal of Solid State and Inorganic Chemistry 30 (1993) 7-18 The influence of alkaline-earth ions on the properties of the "2201" superconductive cuprates: the solid solution Tl2Ba2-xSrxCuO6+d _cod_database_code 1001522 _database_code_amcsd 0012562 3.7464 3.7464 22.3013 90 90 90 I4/mmm atom x y z occ Tl1 .044 0 .2009 .25 Sr1 .5 .5 .0806 Cu1 0 0 0 O1 0 .5 0 O2 0 0 .107 O3 .58 0 .206 .25