The structure described by Ce3Ni2Si8 crystallizes in the orthorhombic Cmmm space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 16-coordinate geometry to four equivalent Si(1), four equivalent Si(3), and eight equivalent Si(4) atoms. In the second Ce site, Ce(2) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Si(1), two equivalent Si(3), and six equivalent Si(2) atoms. Ni(1) is bonded in a 5-coordinate geometry to four equivalent Ce(2), one Si(2), two equivalent Si(1), and two equivalent Si(3) atoms. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), two equivalent Ni(1), and two equivalent Si(4) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to six equivalent Ce(2), one Ni(1), and two equivalent Si(2) atoms. In the third Si site, Si(3) is bonded in a 8-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), two equivalent Ni(1), and two equivalent Si(4) atoms. In the fourth Si site, Si(4) is bonded in a 9-coordinate geometry to four equivalent Ce(1), one Si(4), two equivalent Si(1), and two equivalent Si(3) atoms. is represented by the CIF card [CIF]
data_Ce3(Si4Ni)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.168
_cell_length_b   13.168
_cell_length_c   4.194
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   162.117
_symmetry_Int_Tables_number   1
_cell_volume   223.298
_cell_formula_units_Z   1
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
  Ce  Ce0  1  0.000  0.000  0.000  1.0
  Ce  Ce1  1  0.688  0.312  0.500  1.0
  Ce  Ce2  1  0.312  0.688  0.500  1.0
  Si  Si3  1  0.595  0.405  0.000  1.0
  Si  Si4  1  0.405  0.595  0.000  1.0
  Si  Si5  1  0.776  0.224  0.000  1.0
  Si  Si6  1  0.224  0.776  0.000  1.0
  Si  Si7  1  0.903  0.097  0.500  1.0
  Si  Si8  1  0.097  0.903  0.500  1.0
  Si  Si9  1  0.545  0.455  0.500  1.0
  Si  Si10  1  0.455  0.545  0.500  1.0
  Ni  Ni11  1  0.866  0.134  0.000  1.0
  Ni  Ni12  1  0.134  0.866  0.000  1.0
[/CIF]
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The structure described by Ce3Ni2Si8 crystallizes in the orthorhombic Cmmm space group. There are two inequivalent Ce sites. In the first Ce site, Ce(1) is bonded in a 16-coordinate geometry to four equivalent Si(1), four equivalent Si(3), and eight equivalent Si(4) atoms. In the second Ce site, Ce(2) is bonded in a 14-coordinate geometry to four equivalent Ni(1), two equivalent Si(1), two equivalent Si(3), and six equivalent Si(2) atoms. Ni(1) is bonded in a 5-coordinate geometry to four equivalent Ce(2), one Si(2), two equivalent Si(1), and two equivalent Si(3) atoms. There are four inequivalent Si sites. In the first Si site, Si(1) is bonded in a 8-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), two equivalent Ni(1), and two equivalent Si(4) atoms. In the second Si site, Si(2) is bonded in a 9-coordinate geometry to six equivalent Ce(2), one Ni(1), and two equivalent Si(2) atoms. In the third Si site, Si(3) is bonded in a 8-coordinate geometry to two equivalent Ce(1), two equivalent Ce(2), two equivalent Ni(1), and two equivalent Si(4) atoms. In the fourth Si site, Si(4) is bonded in a 9-coordinate geometry to four equivalent Ce(1), one Si(4), two equivalent Si(1), and two equivalent Si(3) atoms. is represented by the CIF card [CIF]
data_Ce3(Si4Ni)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.168
_cell_length_b   13.168
_cell_length_c   4.194
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   162.117
_symmetry_Int_Tables_number   1
_cell_volume   223.298
_cell_formula_units_Z   1
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
  Ce  Ce0  1  0.000  0.000  0.000  1.0
  Ce  Ce1  1  0.688  0.312  0.500  1.0
  Ce  Ce2  1  0.312  0.688  0.500  1.0
  Si  Si3  1  0.595  0.405  0.000  1.0
  Si  Si4  1  0.405  0.595  0.000  1.0
  Si  Si5  1  0.776  0.224  0.000  1.0
  Si  Si6  1  0.224  0.776  0.000  1.0
  Si  Si7  1  0.903  0.097  0.500  1.0
  Si  Si8  1  0.097  0.903  0.500  1.0
  Si  Si9  1  0.545  0.455  0.500  1.0
  Si  Si10  1  0.455  0.545  0.500  1.0
  Ni  Ni11  1  0.866  0.134  0.000  1.0
  Ni  Ni12  1  0.134  0.866  0.000  1.0
[/CIF]
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