data_global
_amcsd_formula_title 'Mg O6 Pb2 W'
loop_
_publ_author_name
'Baldinozzi G'
'Sciau P'
'Pinot M'
'Grebille D'
_journal_name_full 'Acta Crystallographica, Section B'
_journal_volume 51 
_journal_year 1995
_journal_page_first 668
_journal_page_last 673
_publ_section_title
;
 Crystal structure of the antiferroelectric perovskite Pb2 Mg W O6
 _cod_database_code 1001661
;
_database_code_amcsd 0009888
_chemical_formula_sum 'Pb2 Mg W O6'
_cell_length_a 7.9440
_cell_length_b 5.6866
_cell_length_c 11.4059
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 515.254
_exptl_crystal_density_diffrn      9.263
_symmetry_space_group_name_H-M 'P m c n'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2-x,y,z'
  '1/2+x,-y,-z'
  '1/2+x,1/2+y,1/2-z'
  '1/2-x,1/2-y,1/2+z'
  'x,1/2-y,1/2+z'
  '-x,1/2+y,1/2-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Pb1   0.00320   0.78040   0.14220
Mg1   0.25000   0.75190   0.37720
W1   0.25000   0.25770   0.11610
O1   0.49070   0.23650   0.13140
O2   0.25000   0.01330   0.00270
O3   0.25000   0.49910   0.01030
O4   0.25000  -0.01530   0.23700
O5   0.25000   0.47450   0.24910