data_global
_amcsd_formula_title 'Ba2 Ca0.4 Cu2 Hg0.73 O6.6 Y0.6'
loop_
_publ_author_name
'Maignan A'
'Van Tendeloo G'
'Hervieu M'
'Michel C'
'Raveau B'
_journal_name_full 'Physica C'
_journal_volume 212 
_journal_year 1993
_journal_page_first 239
_journal_page_last 244
_publ_section_title
;
 A new "1212" mercury-based 90K superconductor: Y0.6Ca0.4Ba2(Hg1-xMx)Cu2O6+y
 _cod_database_code 1001572
;
_database_code_amcsd 0015054
_chemical_formula_sum 'Hg.73 Ba2 (Y.6 Ca.4) Cu2 O6.6'
_cell_length_a 3.870
_cell_length_b 3.870
_cell_length_c 12.537
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 187.765
_exptl_crystal_density_diffrn      6.395
_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   0.73000
Ba1   0.50000   0.50000   0.21370   1.00000
Y1   0.50000   0.50000   0.50000   0.60000
Ca1   0.50000   0.50000   0.50000   0.40000
Cu1   0.00000   0.00000   0.37280   1.00000
O1   0.00000   0.00000   0.16300   1.00000
O2   0.00000   0.50000   0.38500   1.00000
O3   0.50000   0.50000   0.00000   0.60000