The crystal structure described by USi is delta Molybdenum Boride-like structured and crystallizes in the orthorhombic Pnma space group. U(1) is bonded in a 5-coordinate geometry to seven equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to seven equivalent U(1) and two equivalent Si(1) atoms. is represented by the CIF card [CIF]
data_USi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.607
_cell_length_b   5.023
_cell_length_c   8.624
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   156.215
_cell_formula_units_Z   4
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  U  U0  1  0.250  0.365  0.714  1.0
  U  U1  1  0.750  0.635  0.286  1.0
  U  U2  1  0.750  0.865  0.786  1.0
  U  U3  1  0.250  0.135  0.214  1.0
  Si  Si4  1  0.250  0.842  0.521  1.0
  Si  Si5  1  0.750  0.158  0.479  1.0
  Si  Si6  1  0.750  0.342  0.979  1.0
  Si  Si7  1  0.250  0.658  0.021  1.0
[/CIF]
.
The crystal structure described by USi is delta Molybdenum Boride-like structured and crystallizes in the orthorhombic Pnma space group. U(1) is bonded in a 5-coordinate geometry to seven equivalent Si(1) atoms. Si(1) is bonded in a 9-coordinate geometry to seven equivalent U(1) and two equivalent Si(1) atoms. is represented by the CIF card [CIF]
data_USi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.607
_cell_length_b   5.023
_cell_length_c   8.624
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   156.215
_cell_formula_units_Z   4
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  U  U0  1  0.250  0.365  0.714  1.0
  U  U1  1  0.750  0.635  0.286  1.0
  U  U2  1  0.750  0.865  0.786  1.0
  U  U3  1  0.250  0.135  0.214  1.0
  Si  Si4  1  0.250  0.842  0.521  1.0
  Si  Si5  1  0.750  0.158  0.479  1.0
  Si  Si6  1  0.750  0.342  0.979  1.0
  Si  Si7  1  0.250  0.658  0.021  1.0
[/CIF]
.