Ba1.95 Ca Cu2 Hg0.69 O7 Sr0.05 V0.31 Knizek K, Malo S, Michel C, Maignan A, Pollert E, Raveau B European Journal of Solid State and Inorganic Chemistry 34 (1997) 1063-1074 Structural evolution and physical properties of the 1212 superconductor series Hg0.7 V0.3 Ba2-x Srx Ca1-y Sry Cu2 O6+d _cod_database_code 1001794 _database_code_amcsd 0012613 3.8687 3.8687 12.496 90 90 90 P4/mmm atom x y z occ Hg1 0 0 0 .69 V1 .1 0 0 .0775 Ba1 .5 .5 .2179 .975 Sr1 .5 .5 .2179 .025 Ca1 .5 .5 .5 Cu1 0 0 .3769 O1 0 .5 .378 O2 0 0 .148 O3 .365 .365 0 .25