data_1008113
_chemical_name_systematic          'Uranium boride (1/4)'
_chemical_formula_structural       'U B4'
_chemical_formula_sum              'B4 U'
_publ_section_title
;
Contribution a l'Etude des Borures a Teneur Elevee en Bore
;
loop_
_publ_author_name
  'Blum, P'
  'Bertaut, F'
_journal_name_full                 'Acta Crystallographica (1,1948-23,1967)'
_journal_coden_ASTM                ACCRA9
_journal_volume                    7
_journal_year                      1954
_journal_page_first                81
_journal_page_last                 86
_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                       199.4
_cell_formula_units_Z              4
_symmetry_space_group_name_H-M     'P 4/m b m'
_symmetry_Int_Tables_number        127
_symmetry_cell_setting             tetragonal
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '-x,-y,z'
  '1/2+x,1/2-y,z'
  '1/2-x,1/2+y,z'
  '-y,x,z'
  'y,-x,z'
  '1/2+y,1/2+x,z'
  '1/2-y,1/2-x,z'
  '-x,-y,-z'
  'x,y,-z'
  '1/2-x,1/2+y,-z'
  '1/2+x,1/2-y,-z'
  'y,-x,-z'
  '-y,x,-z'
  '1/2-y,1/2-x,-z'
  '1/2+y,1/2+x,-z'
loop_
_atom_type_symbol
_atom_type_oxidation_number
  U0     0.000
  B0     0.000
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_Wyckoff_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_attached_hydrogens
_atom_site_calc_flag
  U1    U0     4 g 0.31 0.81 0. 1.  0 d
  B1    B0     4 e 0. 0. 0.213 1.  0 d
  B2    B0     4 h -0.086 0.414 0.5 1.  0 d
  B3    B0     8 j 0.174 0.042 0.5 1.  0 d