data_1001392
_chemical_name_systematic          'Nickel borouranate * 00000100'
_chemical_formula_structural       'Ni7 B4 U O16'
_chemical_formula_sum              'B4 Ni7 O16 U'
_publ_section_title
;
Synthese et structure du tetraborouranate de nickel, Ni~7~ B~4~ U O~16~
;
_publ_author_name                  'Gasperin, M'
_journal_name_full                 'Acta Crystallographica C (39,1983-)'
_journal_coden_ASTM                ACSCEE
_journal_volume                    45
_journal_year                      1989
_journal_page_first                981
_journal_page_last                 983
_cell_length_a                     5.861(2)
_cell_length_b                     20.200(6)
_cell_length_c                     4.501
_cell_angle_alpha                  90
_cell_angle_beta                   90
_cell_angle_gamma                  90
_cell_volume                       532.9
_cell_formula_units_Z              2
_symmetry_space_group_name_H-M     'P m n n'
_symmetry_Int_Tables_number        58
_symmetry_cell_setting             orthorhombic
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  'x,-y,-z'
  '1/2-x,1/2-y,1/2+z'
  '1/2-x,1/2+y,1/2-z'
  '-x,-y,-z'
  '-x,y,z'
  '1/2+x,1/2+y,1/2-z'
  '1/2+x,1/2-y,1/2+z'
loop_
_atom_type_symbol
_atom_type_oxidation_number
  U6+    6.000
  Ni2+   2.000
  B3+    3.000
  O2-   -2.000
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    U6+    2 a 0. 0. 0. 1.  0 d
  Ni1   Ni2+   2 b 0. 0.5 0. 1.  0 d
  Ni2   Ni2+   4 e 0. 0.2628(3) 0.4996(8) 1.  0 d
  Ni3   Ni2+   8 g 0.2488(7) 0.1289(2) 0.4980(6) 1.  0 d
  B1    B3+    4 e 0. 0.5874(18) 0.5528(66) 1.  0 d
  B2    B3+    4 e 0. 0.1921(17) 0.051(6) 1.  0 d
  O1    O2-    8 g 0.1981(21) 0.2050(5) 0.2041(27) 1.  0 d
  O2    O2-    4 e 0. 0.1765(8) 0.7455(45) 1.  0 d
  O3    O2-    4 e 0. 0.3466(8) 0.2746(37) 1.  0 d
  O4    O2-    8 g 0.2911(20) 0.0510(5) 0.7846(25) 1.  0 d
  O5    O2-    4 e 0. 0.0704(7) 0.2856(35) 1.  0 d
  O6    O2-    4 e 0. 0.5859(8) 0.2499(41) 1.  0 d
_refine_ls_R_factor_all            0.054