Ba Cu Hg0.67 O4.66 Sr V0.33 Knizek K, Malo S, Michel C, Hervieu M, Maignan A, Raveau B Physica C 277 (1997) 119-132 The 1201 superconductors Hg(1-y) (V O4)(y) (Ba, Sr)2 Cu O(4-2y+delta): evidence for VO4 tetrahedra _cod_database_code 1001819 _database_code_amcsd 0015081 3.8523 3.8523 9.077 90 90 90 P4/mmm atom x y z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Hg1 0 0 0 .67 .0201 .0201 .0086 0 0 0 V1 .100 0 0 .083 Ba1 .5 .5 .2932 .5 .0084 .0084 .0161 0 0 0 Sr1 .5 .5 .2932 .5 .0084 .0084 .0161 0 0 0 Cu1 0 0 .5 .0053 .0053 .012 0 0 0 O1 .5 0 .5 .005 .012 .015 0 0 0 O2 0 0 .216 .033 .033 .056 0 0 0 O3 .364 .364 0 .165