data_global
_amcsd_formula_title 'Bi0.5 Ca0.4 Cu2 Hg0.5 Nd0.6 O6.6 Sr2'
loop_
_publ_author_name
'Pelloquin D'
'Hervieu M'
'Michel C'
'Van Tendeloo G'
'Maignan A'
'Raveau B'
_journal_name_full 'Physica C'
_journal_volume 216 
_journal_year 1993
_journal_page_first 257
_journal_page_last 263
_publ_section_title
;
 A 94K Hg-based superconductor with a "1212" structure
 Hg0.5Bi0.5Sr2Ca1-xRxCu2O6+d (R=Nd,Y,Pr)
 _cod_database_code 1001574
;
_database_code_amcsd 0015058
_chemical_formula_sum '(Hg.5 Bi.5) Sr2 Cu2 (Ca.4 Nd.6) O6.6'
_cell_length_a 3.8259
_cell_length_b 3.8259
_cell_length_c 12.0029
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 175.693
_exptl_crystal_density_diffrn      6.760
_symmetry_space_group_name_H-M 'P 4/m m m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-y,-x,z'
  'y,x,-z'
  'y,-x,-z'
  '-y,x,z'
  'x,-y,z'
  '-x,y,-z'
  'x,y,-z'
  '-x,-y,z'
  'y,x,z'
  '-y,-x,-z'
  '-y,x,-z'
  'y,-x,z'
  '-x,y,z'
  'x,-y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Hg1   0.00000   0.00000   0.00000   0.50000
Bi1   0.00000   0.00000   0.00000   0.50000
Sr1   0.50000   0.50000   0.21210   1.00000
Cu1   0.00000   0.00000   0.35920   1.00000
Ca1   0.50000   0.50000   0.50000   0.40000
Nd1   0.50000   0.50000   0.50000   0.60000
O1   0.50000   0.00000   0.37300   1.00000
O2   0.00000   0.00000   0.16700   1.00000
O3   0.50000   0.50000   0.00000   0.60000