The structure described by U2Co3Si5 crystallizes in the orthorhombic Ibam space group. U(1) is bonded in a 13-coordinate geometry to three equivalent Co(2), two equivalent Si(3), four equivalent Si(1), and four equivalent Si(2) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 6-coordinate geometry to two equivalent Si(2) and four equivalent Si(1) atoms. In the second Co site, Co(2) is bonded in a 8-coordinate geometry to three equivalent U(1), one Si(1), two equivalent Si(2), and two equivalent Si(3) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to four equivalent U(1), one Co(2), two equivalent Co(1), and two equivalent Si(2) atoms. In the second Si site, Si(2) is bonded in a 11-coordinate geometry to four equivalent U(1), one Co(1), two equivalent Co(2), two equivalent Si(1), and two equivalent Si(2) atoms. In the third Si site, Si(3) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent Co(2) atoms. is represented by the CIF file [CIF]
data_U2Co3Si5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.829
_cell_length_b   7.829
_cell_length_c   7.829
_cell_angle_alpha   138.283
_cell_angle_beta   104.373
_cell_angle_gamma   90.305
_symmetry_Int_Tables_number   1
_cell_volume   295.547
_cell_formula_units_Z   2
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  0.868  0.634  0.234  1.0
  U  U1  1  0.132  0.366  0.766  1.0
  U  U2  1  0.599  0.866  0.734  1.0
  U  U3  1  0.401  0.134  0.266  1.0
  Co  Co4  1  0.000  0.250  0.250  1.0
  Co  Co5  1  0.753  0.139  0.615  1.0
  Co  Co6  1  0.524  0.639  0.885  1.0
  Co  Co7  1  0.476  0.361  0.115  1.0
  Co  Co8  1  0.000  0.750  0.750  1.0
  Co  Co9  1  0.247  0.861  0.385  1.0
  Si  Si10  1  0.051  0.897  0.153  1.0
  Si  Si11  1  0.949  0.103  0.847  1.0
  Si  Si12  1  0.256  0.603  0.653  1.0
  Si  Si13  1  0.744  0.397  0.347  1.0
  Si  Si14  1  0.229  0.979  0.750  1.0
  Si  Si15  1  0.771  0.521  0.750  1.0
  Si  Si16  1  0.771  0.021  0.250  1.0
  Si  Si17  1  0.500  0.250  0.750  1.0
  Si  Si18  1  0.500  0.750  0.250  1.0
  Si  Si19  1  0.229  0.479  0.250  1.0
[/CIF]
.
The structure described by U2Co3Si5 crystallizes in the orthorhombic Ibam space group. U(1) is bonded in a 13-coordinate geometry to three equivalent Co(2), two equivalent Si(3), four equivalent Si(1), and four equivalent Si(2) atoms. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 6-coordinate geometry to two equivalent Si(2) and four equivalent Si(1) atoms. In the second Co site, Co(2) is bonded in a 8-coordinate geometry to three equivalent U(1), one Si(1), two equivalent Si(2), and two equivalent Si(3) atoms. There are three inequivalent Si sites. In the first Si site, Si(1) is bonded in a 9-coordinate geometry to four equivalent U(1), one Co(2), two equivalent Co(1), and two equivalent Si(2) atoms. In the second Si site, Si(2) is bonded in a 11-coordinate geometry to four equivalent U(1), one Co(1), two equivalent Co(2), two equivalent Si(1), and two equivalent Si(2) atoms. In the third Si site, Si(3) is bonded in a 8-coordinate geometry to four equivalent U(1) and four equivalent Co(2) atoms. is represented by the CIF file [CIF]
data_U2Co3Si5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.829
_cell_length_b   7.829
_cell_length_c   7.829
_cell_angle_alpha   138.283
_cell_angle_beta   104.373
_cell_angle_gamma   90.305
_symmetry_Int_Tables_number   1
_cell_volume   295.547
_cell_formula_units_Z   2
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  0.868  0.634  0.234  1.0
  U  U1  1  0.132  0.366  0.766  1.0
  U  U2  1  0.599  0.866  0.734  1.0
  U  U3  1  0.401  0.134  0.266  1.0
  Co  Co4  1  0.000  0.250  0.250  1.0
  Co  Co5  1  0.753  0.139  0.615  1.0
  Co  Co6  1  0.524  0.639  0.885  1.0
  Co  Co7  1  0.476  0.361  0.115  1.0
  Co  Co8  1  0.000  0.750  0.750  1.0
  Co  Co9  1  0.247  0.861  0.385  1.0
  Si  Si10  1  0.051  0.897  0.153  1.0
  Si  Si11  1  0.949  0.103  0.847  1.0
  Si  Si12  1  0.256  0.603  0.653  1.0
  Si  Si13  1  0.744  0.397  0.347  1.0
  Si  Si14  1  0.229  0.979  0.750  1.0
  Si  Si15  1  0.771  0.521  0.750  1.0
  Si  Si16  1  0.771  0.021  0.250  1.0
  Si  Si17  1  0.500  0.250  0.750  1.0
  Si  Si18  1  0.500  0.750  0.250  1.0
  Si  Si19  1  0.229  0.479  0.250  1.0
[/CIF]
.