data_global
_amcsd_formula_title 'B4 U'
loop_
_publ_author_name
'Blum P'
'Bertaut F'
_journal_name_full 'Acta Crystallographica'
_journal_volume 7 
_journal_year 1954
_journal_page_first 81
_journal_page_last 86
_publ_section_title
;
 Contribution a l'Etude des Borures a Teneur Elevee en Bore
 _cod_database_code 1008113
;
_database_code_amcsd 0016055
_chemical_formula_sum 'U B4'
_cell_length_a 7.08
_cell_length_b 7.08
_cell_length_c 3.978
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 199.403
_exptl_crystal_density_diffrn      9.369
_symmetry_space_group_name_H-M 'P 4/m b m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '1/2-y,1/2-x,z'
  '1/2+y,1/2+x,-z'
  'y,-x,-z'
  '-y,x,z'
  '1/2+x,1/2-y,z'
  '1/2-x,1/2+y,-z'
  'x,y,-z'
  '-x,-y,z'
  '1/2+y,1/2+x,z'
  '1/2-y,1/2-x,-z'
  '-y,x,-z'
  'y,-x,z'
  '1/2-x,1/2+y,z'
  '1/2+x,1/2-y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
U1   0.31000   0.81000   0.00000
B1   0.00000   0.00000   0.21300
B2  -0.08600   0.41400   0.50000
B3   0.17400   0.04200   0.50000